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Detailed Mineral List:

Abhurite
Formula:	Sn21Cl16(OH)14O6
Locality:	SS Cheerful wreck site, St Ives District, Cornwall, England, UK
Photo: © Steve Rust. Abhurite from SS Cheerful wreck site, St Ives District, Cornwall, England, UK
Acanthite
Formula:	Ag2S
Localities:	Reported from at least 26 localities in this region.
Photo: © M.Rothwell. Acanthite from Red Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Actinolite
Formula:	☐{Ca2}{(Mg,Fe2+)5}(Si8O22)(OH)2
Localities:	Reported from at least 53 localities in this region.
Photo: © Chris Popham. Actinolite from Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK
Adamite
Formula:	Zn2(AsO4)(OH)
Localities:	Reported from at least 9 localities in this region.
Photo: © . Adamite from Wanthwaite Mine, St John's in the Vale, Threlkeld District, North and Western Region, Cumbria, England, UK
Aegirine
Formula:	NaFe3+Si2O6
Locality:	Wolf Rock, Sennen, St Just District, Cornwall, England, UK
Aerugite
Formula:	Ni8.5(AsO4)2As5+O8
Locality:	South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
'Agalmatolite'
Locality:	Restormel Royal Iron Mine (Trinity Mine), Lostwithiel, St Austell District, Cornwall, England, UK
'Agardite'
Localities:	Reported from at least 6 localities in this region.
Photo: © De Nul, Richard. Agardite from Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Agardite-(Ce)
Formula:	CeCu6(AsO4)3(OH)6 · 3H2O
Localities:	Wheal Alfred, Great Wheal Alfred (Alfred Consols), Phillack, St Erth - Gwithian Area, Cornwall, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Photo: © David Green. Agardite-(Ce) from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Agardite-(La)
Formula:	(La,Ce)Cu6(AsO4)3(OH)6 · 3H2O
Localities:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Wheal Alfred, Great Wheal Alfred (Alfred Consols), Phillack, St Erth - Gwithian Area, Cornwall, England, UK Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Deer Hills Baryte Mine, Deer Hills, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Agardite-(Nd)
Formula:	NdCu6(AsO4)3(OH)6 · 3H2O
Locality:	Wheal Alfred, Great Wheal Alfred (Alfred Consols), Phillack, St Erth - Gwithian Area, Cornwall, England, UK
Agardite-(Y)
Formula:	(Y,Ca)Cu6(AsO4)2(AsO4,HAsO4)(OH)6 · 3H2O
Localities:	Marke Valley Mine, Upton Cross, Linkinhorne, Liskeard District, Cornwall, England, UK Wheal Alfred, Great Wheal Alfred (Alfred Consols), Phillack, St Erth - Gwithian Area, Cornwall, England, UK
Photo: © Richard De Nul. Agardite-(Y) from Marke Valley Mine, Upton Cross, Linkinhorne, Liskeard District, Cornwall, England, UK
Aikinite
Formula:	PbCuBiS3
Localities:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Akaganeite
Formula:	β-Fe3+O(OH,Cl)
Localities:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK Warham Marshes, Wells-next-the-Sea, Norfolk, England, UK
Alabandite
Formula:	Mn2+S
Localities:	Bodmin Wheal Mary (Bodmin Consols; Bodmin United), Lanivet, St Austell District, Cornwall, England, UK Tintagel, Wadebridge District, Cornwall, England, UK
Albite
Formula:	NaAlSi3O8
Localities:	Reported from at least 30 localities in this region.
Photo: © Richard De Nul. Albite from VC Quarry, Isle of Lundy, North Devon, Devon, England, UK
Albite var: Andesine
Formula:	(Na,Ca)[Al(Si,Al)Si2O8]
Localities:	Polkernogo, St Keverne, Lizard Peninsula, Cornwall, England, UK Bursting Knotts, Wasdale, North and Western Region (Cumberland), Cumbria, England, UK Wad Mine (Plumbago Mine; Graphite Mine), Seathwaite, Borrowdale, North and Western Region (Cumberland), Cumbria, England, UK Grassgarth Height, Haverthwaite, South Western Region (Furness), Cumbria, England, UK Peers Gill (Piers Gill), Wasdale, North and Western Region (Cumberland), Cumbria, England, UK
Albite var: Oligoclase
Formula:	(Na,Ca)[Al(Si,Al)Si2O8]
Localities:	Brown How, Ennerdale, North and Western Region (Cumberland), Cumbria, England, UK Thurstaston Beach, Wirral, Merseyside, England, UK Barwell meteorite, Barwell, Leicestershire, England, UK Great Rocks Dale, Wormhill, Derbyshire, England, UK Wheal Forest (Forest Mine; Okement Consols), Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © Lloyd Llewellyn. Oligoclase from Horsey - Eccles Coast, Norfolk, England, UK
'Albite-Anorthite Series'
Localities:	Crag Fell, Ennerdale, North and Western Region (Cumberland), Cumbria, England, UK Horsey - Eccles Coast, Norfolk, England, UK
Photo: © Lloyd Llewellyn. Albite-Anorthite Series from Horsey - Eccles Coast, Norfolk, England, UK
Algodonite
Formula:	(Cu1-xAsx)
Localities:	New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
'Allanite'
Localities:	Man of War (Man O'War) Gneiss, Lizard Point, Landewednack, Lizard Peninsula, Cornwall, England, UK Enys Head, Ruan Minor, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Rannerdale Knotts, Crummock Water, Lorton District, North and Western Region (Cumberland), Cumbria, England, UK Mountsorrel Quarry (Buddon Quarry), Barrow-upon-Soar, Leicestershire, England, UK
Allanite-(Ce)
Formula:	{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Localities:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Alloclasite
Formula:	Co1-xFexAsS
Localities:	Wherry Mine, Penzance, Mount's Bay District, Cornwall, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Cobalt Mine, Scar Crag, Causey Pike, Braithwaite District, North and Western Region (Cumberland), Cumbria, England, UK
Allophane
Formula:	(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Localities:	Reported from at least 30 localities in this region.
Photo: © Bill Gordon. Allophane from New East Wheal Russell, Tavistock Hamlets, Tavistock District, Devon, England, UK
Alluaudite
Formula:	(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Almandine
Formula:	Fe2+3Al2(SiO4)3
Localities:	Camborne - Redruth - St Day District, Cornwall, England, UK Bramcrag Quarry, St John's in the Vale, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK Waberthwaite Quarry, Waberthwaite, Southern Fells, North and Western Region (Cumberland), Cumbria, England, UK Chycornish Carn (?), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: © J.Ralph. Almandine from Chycornish Carn, Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Alstonite (TL)
Formula:	BaCa(CO3)2
Type Locality:	Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Habit:	Bipyramidal crystals
Colour:	White
Description:	Occurance restricted to a small area at Holmes Rise on High Cross Vein
Reference:	Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 219; Lithos 8 (1975), 199; BMS Collection
Localities:	Recorded from at least 4 other localities in this region.
Photo: © Paul Nicholson.. Alstonite from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Aluminite
Formula:	Al2(SO4)(OH)4 · 7H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © Bill Gordon. Aluminite from Newhaven, East Sussex, England, UK
Aluminocopiapite
Formula:	Al2/3Fe3+4(SO4)6(OH)2 · 20H2O
Locality:	Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Alum-(K)
Formula:	KAl(SO4)2 · 12H2O
Localities:	Whitby, North Yorkshire, England, UK Millclose Mine, South Darley, Derbyshire, England, UK Kimmeridge, Dorset, England, UK
Alumohydrocalcite
Formula:	CaAl2(CO3)2(OH)4 · 3H2O
Localities:	Woodleaze Quarry, Tytherington Quarries, South Gloucestershire (Bristol; Avon), England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Photo: © Rick Turner, 2006. Alumohydrocalcite from Torr Works Quarry, Cranmore, Somerset, England, UK
Alunite
Formula:	KAl3(SO4)2(OH)6
Localities:	Grainsgill, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Embleton Quarry, Embleton, North and Western Region (Cumberland), Cumbria, England, UK
Alunogen
Formula:	Al2(SO4)3 · 17H2O
Localities:	Wherry Mine, Penzance, Mount's Bay District, Cornwall, England, UK Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
'Amber'
Localities:	Norton, Freshwater, Isle of Wight, England, UK Kent, England, UK Norfolk, England, UK Kensington, Greater London, England, UK
Photo: Amber from East Sussex, England, UK
Amblygonite
Formula:	LiAl(PO4)F
Localities:	Rinsey Head, Rinsey, Breage, Mount's Bay District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Amphibole Supergroup
Formula:	AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Localities:	Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK Wheal Trenwith, St Ives, St Ives District, Cornwall, England, UK Lizard Point, Landewednack, Lizard Peninsula, Cornwall, England, UK
Amphibole Supergroup var: Byssolite
Localities:	Sidmouth, East Devon, Devon, England, UK Seaton, East Devon, Devon, England, UK Trevascus Mine (Trevaskus Mine; Trevaskis Mine), Carnhell Green, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK The Greeb, Perranuthnoe, Mount's Bay District, Cornwall, England, UK Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Analcime
Formula:	Na2(Al2Si4O12) · 2H2O
Localities:	Reported from at least 20 localities in this region.
Photo: Analcime from Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK
Anatase
Formula:	TiO2
Localities:	Reported from at least 56 localities in this region.
Photo: © Steve Rust. Anatase from Kit Hill United Mines, Stoke Climsland, Callington District, Cornwall, England, UK
Andalusite
Formula:	Al2(SiO4)O
Localities:	Reported from at least 11 localities in this region.
Andalusite var: Chiastolite
Localities:	Reported from at least 11 localities in this region.
Photo: © Van King. Chiastolite from Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Andersonite
Formula:	Na2Ca(UO2)(CO3)3 · 6H2O
Locality:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
Photo: © Paul De Bondt. Andersonite from Geevor Mine, Pendeen, St Just, St Just District, Cornwall, England, UK
Andradite
Formula:	Ca3Fe3+2(SiO4)3
Localities:	Reported from at least 6 localities in this region.
Photo: © Ian Jones. Andradite from Belstone Consols, Belstone, Okehampton area, Devon, England, UK
Andradite var: Hydroandradite
Formula:	Ca3Fe3+2(SiO4)3-x(OH)4x
Locality:	Botallack, St Just, St Just District, Cornwall, England, UK
'Andrewsite'
Localities:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK West Phoenix Mine, Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Photo: © J.Ralph 2008. Andrewsite from Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Anglesite
Formula:	PbSO4
Localities:	Reported from at least 86 localities in this region.
Photo: © P N Min.. Anglesite from Milldam Mine, Great Hucklow, Derbyshire, England, UK
Anhydrite
Formula:	CaSO4
Localities:	Reported from at least 17 localities in this region.
Ankerite
Formula:	Ca(Fe2+,Mg)(CO3)2
Localities:	Reported from at least 68 localities in this region.
Photo: © . Ankerite from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Annabergite
Formula:	Ni3(AsO4)2 · 8H2O
Localities:	Reported from at least 17 localities in this region.
Photo: © Steve Rust. Annabergite from Old Sandbed Mine, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Annite
Formula:	KFe2+3(AlSi3O10)(OH)2
Locality:	Merrivale Quarry, Whitchurch, Tavistock District, Devon, England, UK
Anorthite var: Bytownite
Formula:	(Ca,Na)[Al(Al,Si)Si2O8]
Locality:	Eycott Hill, Keswick, Keswick District, North and Western Region (Cumberland), Cumbria, England, UK
Anorthite var: Labradorite
Formula:	(Ca,Na)[Al(Al,Si)Si2O8]
Localities:	Reported from at least 6 localities in this region.
Anthophyllite
Formula:	☐{Mg2}{Mg5}(Si8O22)(OH)2
Localities:	Reported from at least 6 localities in this region.
Antigorite
Formula:	Mg3(Si2O5)(OH)4
Localities:	Countybridge Quarry, Goonhilly Downs, Mawgan-in-Meneage, Lizard Peninsula, Cornwall, England, UK Clicker Tor Quarry, Lower Clicker, Menheniot, Liskeard District, Cornwall, England, UK Castle Head, Keswick, Keswick District, North and Western Region (Cumberland), Cumbria, England, UK
Antimony
Formula:	Sb
Localities:	Reported from at least 13 localities in this region.
Antlerite
Formula:	Cu3(SO4)(OH)4
Localities:	Reported from at least 7 localities in this region.
'Apatite'
Localities:	Reported from at least 62 localities in this region.
Photo: © Steve Rust. Apatite from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
'Apatite var: Collophane'
Localities:	Reported from at least 6 localities in this region.
Aphthitalite ?
Formula:	(K,Na)3Na(SO4)2
Locality:	Billingham anhydrite mine, Billingham, Co. Durham, England, UK - erroneously reported
'Apophyllite'
Localities:	Terrace Hill Quarry, Lostwithiel, St Austell District, Cornwall, England, UK Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Apophyllite-(KF)
Formula:	KCa4(Si8O20)(F,OH) · 8H2O
Locality:	Cambokeels Mine (Cammock Isle Mine; Cumnock Isle Mine; Cammock Eals Mine), Westgate, Weardale, North Pennines, Co. Durham, England, UK
Apophyllite-(KOH)
Formula:	KCa4(Si8O20)(OH,F) · 8H2O
Locality:	Copthill Quarry, Copthill, Weardale, North Pennines, Co. Durham, England, UK
Aragonite
Formula:	CaCO3
Localities:	Reported from at least 110 localities in this region.
Photo: © . Aragonite from Frizington, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Aragonite var: Flos Ferri
Locality:	West Wheal Mary Ann (West Mary Ann Mine), Roseland, Menheniot, Liskeard District, Cornwall, England, UK
Photo: Flos Ferri from West Wheal Mary Ann, Roseland, Menheniot, Liskeard District, Cornwall, England, UK
Ardennite-(As) ?
Formula:	Mn2+4(Al,Mg)6(Si3O10)(SiO4)2(AsO4,VO4)(OH)6
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK - erroneously reported
Argentojarosite
Formula:	AgFe3+3(SO4)2(OH)6
Localities:	Treore Mine, St Endellion, Wadebridge District, Cornwall, England, UK Wheal Wrey, Wrey and Ludcott United Mines, St Ive, Liskeard District, Cornwall, England, UK
Argentopentlandite
Formula:	Ag(Fe,Ni)8S8
Locality:	Groverake Mine, Rookhope District, Weardale, North Pennines, Co. Durham, England, UK
Argentopyrite
Formula:	AgFe2S3
Locality:	Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Arsendescloizite
Formula:	PbZn(AsO4)(OH)
Locality:	Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Arsenic
Formula:	As
Localities:	Reported from at least 10 localities in this region.
Photo: Arsenic from Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Arseniosiderite
Formula:	Ca2Fe3+3(AsO4)3O2 · 3H2O
Localities:	Reported from at least 8 localities in this region.
Arsenogorceixite
Formula:	BaAl3(AsO4)2(OH)5 · H2O
Localities:	Wheal Unity, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Rose (Wheal Lomax), Porthleven, Mount's Bay District, Cornwall, England, UK ? (more information)
Photo: © G.Curtis. Arsenogorceixite from Wheal Rose, Porthleven, Mount's Bay District, Cornwall, England, UK
Arsenogoyazite
Formula:	SrAl3(AsO4)2(OH)5 · H2O
Localities:	Relistian Mine (Relistien Mine; Relistian Consols), Reawla, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: © G.Curtis. Arsenogoyazite from Relistian Mine, Reawla, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK
Arsenolite
Formula:	As2O3
Localities:	Reported from at least 11 localities in this region.
Photo: © Steve Rust. Arsenolite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Arsenopyrite
Formula:	FeAsS
Localities:	Reported from at least 263 localities in this region.
Photo: © Bill Gordon. Arsenopyrite from Wheal Josiah, Devon Great Consols, Tavistock Hamlets, Tavistock District, Devon, England, UK
Arthurite (TL)
Formula:	CuFe3+2(AsO4,PO4,SO4)2(OH,O)2 · 4H2O
Type Locality:	Hingston Down Consols, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Reference:	Davis, R.J., and Hey, M.H. (1964): Mineralogical Magazine 33, 937-941
Localities:	Recorded from at least 3 other localities in this region.
Photo: © Peter Haas. Arthurite from Hingston Down Consols, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
'Asbestos'
Localities:	Reported from at least 6 localities in this region.
Asbolane
Formula:	(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Localities:	Reported from at least 14 localities in this region.
Ashoverite (TL)
Formula:	Zn(OH)2
Type Locality:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Habit:	Tetragonal thin tabular-platy
Colour:	Colourless to white, creamy
Description:	Thin platy Square-like crystals to 1mm, associated with all other zinc hydroxides
Reference:	Min.Mag.(1988) 52, 699-702; UKJMM No10; Ford, T., A. Sarjeant & M. Smith (1993): The minerals of the Peak district of Derbyshire. UK Jour. Mines & Minerals 13, 16-55.
Photo: © Steve Rust. Ashoverite from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
'Asphaltum'
Localities:	Earl Ferrers' Mine (Lord Ferrers' Mine), Staunton Harold, Leicestershire, England, UK Bovey Tracey, Dartmoor & Teign Valley District, Devon, England, UK Blue John Mine (Blue John Cavern), Castleton, Derbyshire, England, UK Treak Cliff Mine (Treak Cliff Cavern), Castleton, Derbyshire, England, UK Hotwells, Clifton, Bristol, England, UK
Photo: © Tom Hardman. Asphaltum from South Crofty Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Atacamite
Formula:	Cu2(OH)3Cl
Localities:	Reported from at least 11 localities in this region.
Photo: © Weinrich Minerals, Inc.. Atacamite from Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Augite
Formula:	(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Localities:	Reported from at least 20 localities in this region.
Photo: © 2003 Thames Valley Minerals. Augite from Walla Crag, Derwentwater, Keswick District, North and Western Region, Cumbria, England, UK
Auriacusite
Formula:	Fe3+Cu2+(AsO4)O
Locality:	Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Aurichalcite
Formula:	(Zn,Cu)5(CO3)2(OH)6
Localities:	Reported from at least 48 localities in this region.
Photo: Aurichalcite from Rutland Cave Mine, Heights of Abraham, Matlock Bath, Derbyshire, England, UK
Autunite
Formula:	Ca(UO2)2(PO4)2 · 11H2O
Localities:	Reported from at least 17 localities in this region.
Photo: © SMS 2007. Autunite from Merrivale Quarry, Whitchurch, Tavistock District, Devon, England, UK
Axinite-(Fe)
Formula:	Ca2Fe2+Al2BSi4O15OH
Localities:	Reported from at least 10 localities in this region.
Photo: © . Axinite-(Fe) from Stamps and Jowl Zawn, Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
'Axinite Group'
Localities:	Reported from at least 30 localities in this region.
Photo: © J.Ralph 2008. Axinite Group from Meldon Quarry, Okehampton area, Devon, England, UK
Azurite
Formula:	Cu3(CO3)2(OH)2
Localities:	Reported from at least 110 localities in this region.
Photo: © Bill Gordon. Azurite from Torr Works Quarry, Cranmore, Somerset, England, UK
Barbosalite
Formula:	Fe2+Fe3+2(PO4)2(OH)2
Localities:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Bariopharmacosiderite
Formula:	Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O
Localities:	Dumpy Stone Level, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Potts Gill Copper Mine, Potts Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Barstowite (TL)
Formula:	Pb4Cl6(CO3) · H2O
Type Locality:	Bounds Cliff, St Endellion, Wadebridge District, Cornwall, England, UK
Reference:	Min.Mag.(1991) 55, 121-125
Baryte
Formula:	BaSO4
Localities:	Reported from at least 372 localities in this region.
Photo: © Peter Haas. Baryte from Mowbray Mine, Frizington, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Baryte var: Oakstone
Localities:	Arbor Low (Middleton Common), Middleton-and-Smerrill, Derbyshire, England, UK Brown Edge, Winster, Derbyshire, England, UK
Photo: © 2002 John H. Betts. Oakstone from Arbor Low, Middleton-and-Smerrill, Derbyshire, England, UK
Barytocalcite (TL)
Formula:	BaCa(CO3)2
Type Locality:	Blagill Mine, Nent Valley, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Reference:	BMS Collection
Localities:	Recorded from at least 15 other localities in this region.
Photo: © De Nul, Richard. Barytocalcite from Nentsberry Haggs Mine, Nent Valley, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
'Baryto-Fluate of Lime'
Locality:	Derbyshire, England, UK
Bassanite
Formula:	CaSO4 · 0.5H2O
Localities:	Lyme Regis Beach, Lyme Regis, Dorset, England, UK Charmouth Beach, Charmouth, Dorset, England, UK Black Ven and The Spittles, Lyme Regis, Dorset, England, UK
Bassetite (TL)
Formula:	Fe2+(UO2)2(PO4)2 · 8H2O
Type Locality:	Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Mineralogical Magazine (1915): 17: 221; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 995.; Mineralogical Magazine 1989 53 : 473-478
Localities:	Recorded from at least 1 other locality in this region.
Photo: © G.Curtis. Bassetite from Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
'Bastnäsite'
Locality:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Bastnäsite-(Ce)
Formula:	(Ce,La)(CO3)F
Locality:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Photo: © D.Green. Bastnäsite-(Ce) from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Bavenite
Formula:	Ca4Be2Al2Si9O26(OH)2
Localities:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © M.P.Cooper. Bavenite from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Bayerite
Formula:	Al(OH)3
Locality:	Hove, Brighton, East Sussex, England, UK
Bayldonite (TL)
Formula:	PbCu3(AsO4)2(OH)2
Type Locality:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Reference:	[Am Min 66 (1981), 148; www.thamesvalleyminerals.com]
Localities:	Recorded from at least 16 other localities in this region.
Photo: © M. P. Cooper. Bayldonite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Bazhenovite
Formula:	Ca8S2(S3)(S2O3)(OH)12 · 20H2O
Localities:	Norfolk, England, UK West Runton Beach, Norfolk, England, UK
Photo: © C.Thomson 2003. Bazhenovite from West Runton Beach, Norfolk, England, UK
Beaverite-(Cu)
Formula:	Pb(Fe3+,Cu)3(SO4)2(OH)6
Localities:	Reported from at least 13 localities in this region.
Photo: © Steve Rust. Beaverite-(Cu) from Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Bechererite
Formula:	(Zn,Cu)6Zn2(SO4,HSiO4)2(OH)12
Localities:	Driggith Mine (Driggeth Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Silver Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Charlotte United Mines, Perranuthnoe, Mount's Bay District, Cornwall, England, UK
Photo: © Rothwell. Bechererite from Driggith Mine, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Becquerelite
Formula:	Ca(UO2)6O4(OH)6 · 8H2O
Localities:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK West Wheal Owles (Cargodna Mine), Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK ? (more information)
Photo: © Brent Thorne. Becquerelite from Geevor Mine, Pendeen, St Just, St Just District, Cornwall, England, UK
Beidellite
Formula:	(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Locality:	Derbyshire, England, UK
Bementite
Formula:	Mn7Si6O15(OH)8
Localities:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Chillaton and Hogstor Mine, Milton Abbot, Tavistock District, Devon, England, UK
Photo: © Richard De Nul. Bementite from Chillaton and Hogstor Mine, Milton Abbot, Tavistock District, Devon, England, UK
Beraunite
Formula:	Fe2+Fe3+5(PO4)4(OH)5 · 4H2O
Localities:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Photo: © De Nul, Richard. Beraunite from Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, St Agnes District, Cornwall, England, UK
Berthierine
Formula:	(Fe2+,Fe3+,AlMg)2-3((Si,Al)2O5)(OH)4
Locality:	South Bay, Scarborough, North Yorkshire, England, UK
Photo: © David J. Eicher. Berthierine from South Bay, Scarborough, North Yorkshire, England, UK
Berthierite
Formula:	FeSb2S4
Localities:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK Tresungers Mine (Rose Mine; Wheal Arthur), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK Hogget Beck, Hartsop, South Eastern Region (Westmorland), Cumbria, England, UK Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Bertrandite
Formula:	Be4(Si2O7)(OH)2
Localities:	Reported from at least 11 localities in this region.
Photo: © Ian Jones. Bertrandite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Beryl
Formula:	Be3Al2(Si6O18)
Localities:	Reported from at least 17 localities in this region.
Photo: © Ian Jones. Beryl from VC Quarry, Isle of Lundy, North Devon, Devon, England, UK
Beryllonite
Formula:	NaBePO4
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © . Beryllonite from Meldon Quarry, Okehampton area, Devon, England, UK
Beudantite
Formula:	PbFe3(AsO4)(SO4)(OH)6
Localities:	Reported from at least 35 localities in this region.
Photo: © David Green. Beudantite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Beyerite
Formula:	Ca(BiO)2(CO3)2
Locality:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
'Biotite'
Localities:	Reported from at least 16 localities in this region.
Photo: © Colleen Thomson 2011. Biotite from Trelavour Downs, St Dennis, St Austell District, Cornwall, England, UK
Birnessite
Formula:	(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Localities:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Greystones Quarry, Lezant, Callington District, Cornwall, England, UK ? (more information)
Photo: © David Green. Birnessite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Bismite
Formula:	Bi2O3
Localities:	Reported from at least 8 localities in this region.
Bismoclite
Formula:	(BiO)Cl
Locality:	Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Photo: © Rust. Bismoclite from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Bismuth
Formula:	Bi
Localities:	Reported from at least 35 localities in this region.
Photo: © Steve Rust. Bismuth from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Bismuthinite
Formula:	Bi2S3
Localities:	Reported from at least 51 localities in this region.
Photo: © Steve Rust. Bismuthinite from Drakewalls Mine, Drakewalls, Calstock, Callington District, Cornwall, England, UK
'Bismuth Ochre'
Locality:	Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Bismutite
Formula:	(BiO)2CO3
Localities:	Reported from at least 15 localities in this region.
Photo: © Steve Rust. Bismutite from Wheal Remfry China Clay Pit, Fraddon, St Enoder, St Austell District, Cornwall, England, UK
Bismutoferrite
Formula:	Fe3+2Bi(SiO4)2(OH)
Localities:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Buckbarrow Beck Veins, Waberthwaite, Southern Fells, North and Western Region (Cumberland), Cumbria, England, UK South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK (more information)
'Bitumen'
Localities:	Reported from at least 19 localities in this region.
Photo: © Steve Rust. Bitumen from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
'Bitumen var: Elaterite'
Localities:	Windy Knoll Quarry, Castleton, Derbyshire, England, UK Odin Mine, Castleton, Derbyshire, England, UK
Photo: © . Elaterite from Matlock, Derbyshire, England, UK
'Blaubleibender Covellite'
Localities:	Seathwaite Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Blixite
Formula:	Pb2(O,OH)2Cl
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Bobkingite (TL)
Formula:	Cu5Cl2(OH)8 · 2H2O
Type Locality:	New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
Description:	4 specimens known.
Reference:	Mineral Mag. 66, 301-311
Boleite
Formula:	KPb26Ag9Cu24(OH)48Cl62
Localities:	Reported from at least 8 localities in this region.
Photo: © Steve Rust. Boleite from The Gannel Smelter, Crantock, St Agnes District, Cornwall, England, UK
Boltwoodite
Formula:	(K,Na)(UO2)[HSiO4] · 0.5H2O
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Boracite
Formula:	Mg3(B7O13)Cl
Localities:	Boulby Mine, Loftus, North Yorkshire, England, UK Eskdale No. 2 borehole (Aislaby), Eskdale, North Yorkshire, England, UK
Photo: © Rob Lavinsky. Boracite from Boulby Mine, Loftus, North Yorkshire, England, UK
Bornite
Formula:	Cu5FeS4
Localities:	Reported from at least 78 localities in this region.
Photo: © J.Ralph 2008. Bornite from Carn Brea Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Botallackite (TL)
Formula:	Cu2(OH)3Cl
Type Locality:	Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Reference:	J.Chem.Soc. London (1865) ser. 2, vol. 3, 212-214
Localities:	Recorded from at least 12 other localities in this region.
Photo: © De Nul, Richard. Botallackite from Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK
Bottinoite
Formula:	Ni2+[Sb(OH)6]2 · 6H2O
Localities:	Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Steve Rust. Bottinoite from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Boulangerite
Formula:	Pb5Sb4S11
Localities:	Reported from at least 13 localities in this region.
Photo: © G.Curtis. Boulangerite from Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK
Bournonite (TL)
Formula:	PbCuSbS3
Type Locality:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK
Reference:	Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, p. 577; Embrey & Symes, 1987, 89 - "Minerals of Cornwall and Devon"
Localities:	Recorded from at least 29 other localities in this region.
Photo: © Ian Jones. Bournonite from Herodsfoot Mine, Lanreath, Liskeard District, Cornwall, England, UK
Brandtite
Formula:	Ca2(Mn2+,Mg)(AsO4)2 · 2H2O
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Braunite
Formula:	Mn2+Mn3+6(SiO4)O8
Locality:	Wyndham Mines, Bigrigg, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England, UK
Breithauptite
Formula:	NiSb
Locality:	Old Potts Gill Mine, Potts Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
'Brewsterite'
Locality:	Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Brianyoungite (TL)
Formula:	Zn3(CO3,SO4)(OH)4
Type Locality:	Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Reference:	Min.Mag.(1993) 57, 665-670; BMS Collection
Localities:	Recorded from at least 4 other localities in this region.
Photo: © De Nul, Richard. Brianyoungite from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Brochantite
Formula:	Cu4(SO4)(OH)6
Localities:	Reported from at least 88 localities in this region.
Photo: © David Green. Brochantite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Brookite
Formula:	TiO2
Localities:	Reported from at least 11 localities in this region.
Photo: © Steve Rust. Brookite from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Brucite
Formula:	Mg(OH)2
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Brushite
Formula:	Ca(HPO4) · 2H2O
Locality:	Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Bustamite
Formula:	CaMn2+(Si2O6)
Localities:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © Ian Jones. Bustamite from Meldon Quarry, Okehampton area, Devon, England, UK
Buttgenbachite
Formula:	Cu19(NO3)2(OH)32Cl4 · 2H2O
Locality:	Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Cacoxenite
Formula:	Fe3+24Al(PO4)17O6(OH)12 · 17H2O
Localities:	Reported from at least 7 localities in this region.
Photo: © Steve Rust. Cacoxenite from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
'Calamine'
Localities:	Reported from at least 13 localities in this region.
Photo: Calamine from South Caradon Mine, Caradon Hill, St Cleer, Liskeard District, Cornwall, England, UK
Calcite
Formula:	CaCO3
Localities:	Reported from at least 474 localities in this region.
Photo: © Kristalle and Crystal Classics. Calcite from Bigrigg Mine, Bigrigg, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Calcite var: Argentine
Localities:	South Roskear Mine, South Roskear group (Pendarves Consols), Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: © J.Ralph. Argentine from South Roskear Mine, South Roskear group, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Calcite var: Cobaltoan Calcite
Formula:	(Ca,Co)CO3
Locality:	Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © . Cobaltoan Calcite from Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Calcite var: Ferroan Calcite
Formula:	(Ca,Fe)CO3
Localities:	Reported from at least 6 localities in this region.
Calcite var: Glendonite
Locality:	Jarrow Slake, Jarrow, Tyne & Wear, England, UK
Calcite var: Iceland Spar
Locality:	Millclose Mine, South Darley, Derbyshire, England, UK
Calcite var: Manganoan Calcite
Formula:	(Ca,Mn)CO3
Localities:	Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Photo: © Ian Jones. Manganoan Calcite from Torr Works Quarry, Cranmore, Somerset, England, UK
Calcite var: Slate Spar
Locality:	Polgooth Mine (Old Polgooth Mine; Polgooth United Mine; Tregontrees and Old Polgooth Mine), Polgooth, St Mewan, St Austell District, Cornwall, England, UK
Calcite var: Travertine
Formula:	CaCO3
Localities:	Reported from at least 9 localities in this region.
Caledonite
Formula:	Pb5Cu2(SO4)3(CO3)(OH)6
Localities:	Reported from at least 19 localities in this region.
Photo: © Steve Rust. Caledonite from Red Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Calomel
Formula:	(Hg+2)Cl2
Locality:	Chatsworth Mine, Grassington Moor, Grassington, Wharfedale, North Pennines, North Yorkshire, England, UK
Cancrinite
Formula:	(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Locality:	Wolf Rock, Sennen, St Just District, Cornwall, England, UK
Carbonatecyanotrichite
Formula:	Cu4Al2(CO3,SO4)(OH)12 · 2H2O
Localities:	New East Wheal Russell (South Wheal Crebor), Tavistock Hamlets, Tavistock District, Devon, England, UK Lunehead Mine, Lunedale, North Pennines, Co. Durham, England, UK Hanover Cove, St Agnes, St Agnes District, Cornwall, England, UK
Photo: © Dr. Holger Klapproth. Carbonatecyanotrichite from Hanover Cove, St Agnes, St Agnes District, Cornwall, England, UK
Carminite
Formula:	PbFe3+2(AsO4)2(OH)2
Localities:	Reported from at least 24 localities in this region.
Photo: © M. P. Cooper. Carminite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Carnallite
Formula:	KMgCl3 · 6H2O
Localities:	Boulby Mine, Loftus, North Yorkshire, England, UK Rough Gas Field, Block 47/3, Offshore, Humberside, England, UK Eskdale No. 3 borehole (Sleights), Eskdale, North Yorkshire, England, UK Eskdale No. 4 borehole (Sneaton), Eskdale, North Yorkshire, England, UK Eskdale No. 6 borehole (Upgang), Eskdale, North Yorkshire, England, UK
Carnotite
Formula:	K2(UO2)2(VO4)2 · 3H2O
Localities:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK ? (more information)
Carpholite
Formula:	Mn2+Al2(Si2O6)(OH)4
Localities:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Hingston Down Consols, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK ? (more information) Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK ? (more information) Grainsgill, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK ? (more information) Kit Hill Mine (Kit Hill Consols), Kit Hill United Mines (incl. Kit Hill Great Consols), Stoke Climsland, Callington District, Cornwall, England, UK ? (more information)
Cassiterite
Formula:	SnO2
Localities:	Reported from at least 558 localities in this region.
Photo: © 2002 Thames Valley Minerals. Cassiterite from Wheal Pendarves, Killivose, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Cassiterite var: Toad's Eye Tin
Localities:	Wheal Darby (East Wheal Cock; Garth Mine; Wheal Mary), Burya's Bridge, Paul, Mount's Bay District, Cornwall, England, UK Wheal Tremayne, Fraddam, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK Trethurgy Moor, Trethurgy, Treverbyn, St Austell District, Cornwall, England, UK
Cassiterite var: Wood Tin
Localities:	Reported from at least 14 localities in this region.
Photo: © Paul De Bondt. Wood Tin from Cornwall, England, UK
Celadonite
Formula:	K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Locality:	Treak Cliff Mine (Treak Cliff Cavern), Castleton, Derbyshire, England, UK
Celestine
Formula:	SrSO4
Localities:	Reported from at least 31 localities in this region.
Photo: © J.Ralph. Celestine from Yate Quarry, Yate, Chipping Sodbury District, South Gloucestershire, England, UK
Celestine var: Barian Celestine
Formula:	(Sr,Ba)SO4
Locality:	Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire (Bristol; Avon), England, UK
Photo: © Bill Gordon. Barian Celestine from Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire, England, UK
Ceruleite
Formula:	Cu2Al7(AsO4)4(OH)13 · 11.5H2O
Localities:	Reported from at least 7 localities in this region.
Photo: © Steve Rust. Ceruleite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Cerussite
Formula:	PbCO3
Localities:	Reported from at least 199 localities in this region.
Photo: © J.Ralph. Cerussite from Pentireglaze Mine, Polzeath, St Minver, Wadebridge District, Cornwall, England, UK
Cervantite
Formula:	Sb3+Sb5+O4
Localities:	Reported from at least 6 localities in this region.
Photo: Cervantite from Port Isaac Cliffs, Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK
Cesàrolite
Formula:	Pb(Mn4+)3O6(OH)2
Localities:	Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
'Chabazite'
Localities:	Reported from at least 8 localities in this region.
Photo: © D.L.. Chabazite from Ramsley Mine, Okehampton area, Devon, England, UK
Chalcanthite
Formula:	CuSO4 · 5H2O
Localities:	Reported from at least 19 localities in this region.
Photo: © Steve Rust. Chalcanthite from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Chalcoalumite
Formula:	CuAl4(SO4)(OH)12 · 3H2O
Localities:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK New East Wheal Russell (South Wheal Crebor), Tavistock Hamlets, Tavistock District, Devon, England, UK Hanover Cove, St Agnes, St Agnes District, Cornwall, England, UK
Photo: © Ian Jones. Chalcoalumite from New East Wheal Russell, Tavistock Hamlets, Tavistock District, Devon, England, UK
Chalcocite
Formula:	Cu2S
Localities:	Reported from at least 162 localities in this region.
Photo: © 2003 Thames Valley Minerals. Chalcocite from Camborne - Redruth - St Day District, Cornwall, England, UK
Chalcomenite
Formula:	CuSeO3 · 2H2O
Locality:	Wheal Hen, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Chalcophyllite
Formula:	Cu18Al2(SO4)3(AsO4)3(OH)27 · 33H2O
Localities:	Reported from at least 29 localities in this region.
Photo: © J.Ralph 2008. Chalcophyllite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Chalcopyrite
Formula:	CuFeS2
Localities:	Reported from at least 585 localities in this region.
Photo: © fabreminerals. Chalcopyrite from Tincroft Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Chalcopyrite var: Blister Copper
Localities:	Reported from at least 12 localities in this region.
Photo: © Peter Haas. Blister Copper from Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Chalcosiderite (TL)
Formula:	Cu(Fe3+,Al)6(PO4)4(OH)8 · 4H2O
Type Locality:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 802, 950; American Mineralogist (1965): 50: 227; Lapis (1999): 12: 9; Mineralogical Record: 12: 351-352.
Localities:	Recorded from at least 8 other localities in this region.
Photo: © Elmar Lackner. Chalcosiderite from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
'Chalcosiderite-Turquoise Series'
Locality:	Giew Mine (Giew Consols), Cripplesease, Towednack, St Ives District, Cornwall, England, UK
Photo: © . Chalcosiderite-Turquoise Series from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Chamosite
Formula:	(Fe2+,Mg)5Al(AlSi3O10)(OH)8
Localities:	Reported from at least 8 localities in this region.
Photo: © Weinrich Minerals, Inc.. Chamosite from South Caradon Mine, Caradon Hill, St Cleer, Liskeard District, Cornwall, England, UK
Chamosite var: Corundophilite
Formula:	(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Localities:	Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK Millclose Mine, South Darley, Derbyshire, England, UK
Chamosite var: Daphnite
Formula:	(Fe,Mg)5Al(Si,Al)4O10(OH)8
Localities:	South Caradon Mine, Caradon Hill, St Cleer, Liskeard District, Cornwall, England, UK New Tolgus Shaft, East Pool and Agar Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK South Crofty Mine (South Wheal Crofty), Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Sharptor Mine (West Sharptor Mine), Sharptor, Linkinhorne, Liskeard District, Cornwall, England, UK Silver Valley Mine (William and Mary Worth Mine; incl. Ashburton Mine), Sevenstones, Calstock, Callington District, Cornwall, England, UK
Photo: Daphnite from South Caradon Mine, Caradon Hill, St Cleer, Liskeard District, Cornwall, England, UK
Chamosite var: Thuringite
Formula:	(Fe,Fe,Mg,Al)6(Si,Al)4O10(O,OH)8
Locality:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
'Chamosite-Clinochlore Series'
Locality:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Chenevixite (TL)
Formula:	Cu2Fe3+2(AsO4)2(OH)4
Type Locality:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Fluorite: The Collector's Choice. Extra Lapis English No. 9
Localities:	Recorded from at least 5 other localities in this region.
Photo: © Steve Rust. Chenevixite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Chenite
Formula:	Pb4Cu(SO4)2(OH)6
Localities:	Reported from at least 6 localities in this region.
Photo: © G. Curtis. Chenite from Wheal Rose, Porthleven, Mount's Bay District, Cornwall, England, UK
'Chert'
Localities:	Reported from at least 19 localities in this region.
Childrenite (TL)
Formula:	(Fe2+,Mn2+)Al(PO4)(OH)2 · H2O
Type Locality:	Tavistock District, Devon, England, UK
Reference:	American Mineralogist (1950): 35: 793; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 938; Lapis 11 (1986), 7.
Localities:	Recorded from at least 28 other localities in this region.
Photo: © JM. Johannet. Childrenite from George and Charlotte Mine, Devon and Cornwall United Mines, Tavistock Hamlets, Tavistock District, Devon, England, UK
Chlorargyrite
Formula:	AgCl
Localities:	Reported from at least 17 localities in this region.
Photo: © Richard De Nul. Chlorargyrite from Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Chlorargyrite var: Bromian Chlorargyrite
Formula:	Ag(Cl,Br)
Localities:	Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Perran Silver Mine, Perranuthnoe, Mount's Bay District, Cornwall, England, UK
'Chlorite Group'
Localities:	Reported from at least 218 localities in this region.
Photo: © Steve Rust. Chlorite Group from Meldon Aplite Quarry, Okehampton area, Devon, England, UK
'Chlorophaeite'
Formula:	(Ca,Mg,Fe)2Fe2Si4O13 · 10H2O
Locality:	Folly Quarry, Little Mell Fell, Wreay, North and Western Region (Cumberland), Cumbria, England, UK
Chloroxiphite (TL)
Formula:	Pb3CuO2Cl2(OH)2
Type Locality:	Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 83, 85; Mineralogical Magazine (1923): 20, 67-92 (the mineral 75-77); Clark, 1993 - "Hey's Mineral Index"] [MinRec 27:253]
Localities:	Recorded from at least 5 other localities in this region.
Photo: © Peter Haas. Chloroxiphite from Torr Works Quarry, Cranmore, Somerset, England, UK
Chrisstanleyite (TL)
Formula:	Ag2Pd3Se4
Type Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Reference:	Min.Mag.(1998) 62, 257-264
Photo: Chrisstanleyite from Hope's Nose, Torquay, South Devon, Devon, England, UK
Chromite
Formula:	Fe2+Cr3+2O4
Localities:	Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Cadgwith, Ruan Minor, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Barwell meteorite, Barwell, Leicestershire, England, UK
Chrysoberyl
Formula:	BeAl2O4
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Chrysocolla
Formula:	Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O (x < 1)
Localities:	Reported from at least 72 localities in this region.
Photo: © Steve Rust. Chrysocolla from Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Chrysotile
Formula:	Mg3(Si2O5)(OH)4
Localities:	Reported from at least 11 localities in this region.
Churchite-(Y)
Formula:	Y(PO4) · 2H2O
Localities:	Lostwithiel, St Austell District, Cornwall, England, UK Tryphena lode, Wheal Pendarves, Killivose, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Photo: © Steve Rust. Churchite-(Y) from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Cinnabar
Formula:	HgS
Localities:	Reported from at least 17 localities in this region.
Photo: © Christine Rust. Cinnabar from Coldstones Quarry, Greenhow, Pateley Bridge District, North Pennines, North Yorkshire, England, UK
Claudetite var: Antimonian Claudetite
Formula:	(As,Sb)2O3
Locality:	Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Photo: Antimonian Claudetite from Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Clausthalite
Formula:	PbSe
Localities:	Hope's Nose, Torquay, South Devon, Devon, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
'Clay'
Locality:	Bracknell Brickworks, Binfield, Berkshire, England, UK
Photo: © W. Gordon. Clay from Aust Cliff, Aust, South Gloucestershire, England, UK
Clinoatacamite
Formula:	Cu2(OH)3Cl
Locality:	New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
Photo: © Christine Rust. Clinoatacamite from Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK
Clinochlore
Formula:	(Mg,Fe2+)5Al(AlSi3O10)(OH)8
Localities:	Reported from at least 10 localities in this region.
Clinochlore var: Delessite
Formula:	(Mg,Fe,Fe,Al)(Si,Al)4O10(O,OH)8
Locality:	Calton Hill Quarry, Blackwell-in-the-Peak, Derbyshire, England, UK
Clinochlore var: Diabantite
Formula:	(Mg,Fe,Al)6((Si,Al)4O10)(OH)8
Localities:	Great Rocks Dale, Wormhill, Derbyshire, England, UK Millclose Mine, South Darley, Derbyshire, England, UK
Clinochlore var: Pennine
Locality:	Great Rocks Dale, Wormhill, Derbyshire, England, UK
Clinoclase (TL)
Formula:	Cu3(AsO4)(OH)3
Type Locality:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Habit:	Often as radiating spheres of crystals.
Colour:	Blue
Reference:	Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Localities:	Recorded from at least 9 other localities in this region.
Photo: Clinoclase from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
'Clinoptilolite'
Locality:	Carrack Dews Mine (Carrick Du Mine), St Ives, St Ives District, Cornwall, England, UK
Clinoptilolite-Ca
Formula:	(Ca,Na,K)2-3Al3(Al,Si)2Si13O36 · 12H2O
Locality:	Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: © J.Ralph. Clinoptilolite-Ca from Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
'Clinoptilolite-Ca-Heulandite-Ca Series'
Localities:	New Cook's Kitchen Mine, South Crofty Mine (South Wheal Crofty), Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: Clinoptilolite-Ca-Heulandite-Ca Series from Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Clinozoisite
Formula:	{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Localities:	Camelford, Lanteglos-by-Camelford, Wadebridge District, Cornwall, England, UK Wad Mine (Plumbago Mine; Graphite Mine), Seathwaite, Borrowdale, North and Western Region (Cumberland), Cumbria, England, UK
'Coal var: Anthracite'
Locality:	Bideford, North Devon, Devon, England, UK
'Coal var: Jet'
Locality:	Whitby, North Yorkshire, England, UK
Cobaltite
Formula:	CoAsS
Localities:	Reported from at least 16 localities in this region.
Coffinite
Formula:	(U4+,Th)(SiO4)1-x(OH)4x
Localities:	Reported from at least 7 localities in this region.
'Columbite'
Formula:	(Fe,Mn)(Nb,Ta)2O6
Localities:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Columbite-(Fe)
Formula:	FeNb2O6
Locality:	Chywoon Quarry, Longdowns, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK
Columbite-(Mn)
Formula:	(Mn,Fe)(Nb,Ta)2O6
Localities:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Chywoon Quarry, Longdowns, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK
Compreignacite
Formula:	K2(UO2)6O4(OH)6 · 7H2O
Localities:	Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
'Condurrite'
Localities:	Great Condurrow Mine, Pendarves United Mines, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Druid (Wheal Druid's), Carn Brea Mine (incl. Tregajorran Mine), Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Carn Brea Mine (incl. Tregajorran Mine), Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: Condurrite from Great Condurrow Mine, Pendarves United Mines, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Congolite
Formula:	(Fe2+,Mg)3(B7O13)Cl
Locality:	Boulby Mine, Loftus, North Yorkshire, England, UK
Photo: © 2004 ROM. Congolite from Boulby Mine, Loftus, North Yorkshire, England, UK
Conichalcite
Formula:	CaCu(AsO4)(OH)
Localities:	Wheal Kendall, St Hilary, Mount's Bay District, Cornwall, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Driggith Mine (Driggeth Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Old Potts Gill Mine, Potts Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Connellite (TL)
Formula:	Cu19(SO4)(OH)32Cl4 · 3H2O
Type Locality:	Wheal Providence, Providence Mines, Carbis Bay, Lelant, St Ives District, Cornwall, England, UK
Reference:	Rashleigh, 1802, "British Minerals Vol 2"; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 573.
Localities:	Recorded from at least 48 other localities in this region.
Photo: © Colleen Thomson. Connellite from New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
'Copal'
Locality:	Highgate, Camden, Greater London, England, UK
Copiapite
Formula:	Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Locality:	Mount Wellington Mine (Wheal Magpie), Cusgarne, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Copper
Formula:	Cu
Localities:	Reported from at least 129 localities in this region.
Photo: © Peter Haas. Copper from Williams Stone Quarry, Goonhilly Downs, Mawgan-in-Meneage, Lizard Peninsula, Cornwall, England, UK
Cordierite
Formula:	(Mg,Fe)2Al3(AlSi5O18)
Localities:	Reported from at least 11 localities in this region.
Corkite
Formula:	PbFe3(PO4)(SO4)(OH)6
Localities:	Reported from at least 9 localities in this region.
Photo: © Steve Rust. Corkite from Iron Crag, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Cornubite (TL)
Formula:	Cu5(AsO4)2(OH)4
Type Locality:	Wheal Carpenter, Fraddam, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK
Reference:	Claringbull, G.F., Hey, M.H., and Davis, R.J. (1959): Mineralogical Magazine 32, 1–5.
Localities:	Recorded from at least 14 other localities in this region.
Photo: © Steve Rust. Cornubite from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Cornwallite (TL)
Formula:	Cu5(AsO4)2(OH)4
Type Locality:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
Localities:	Recorded from at least 20 other localities in this region.
Photo: © David Green. Cornwallite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Coronadite
Formula:	Pb(Mn4+6Mn3+2)O16
Localities:	Dry Gill Mine, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Burtree Slits, Cowshill, Weardale, North Pennines, Co. Durham, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Corrensite
Formula:	(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2O
Locality:	Malvern Hills, Worcestershire, England, UK
Corundum
Formula:	Al2O3
Localities:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Kenidjack Cliff, St Just, St Just District, Cornwall, England, UK Knill Quarry, St Ives, St Ives District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Madron, St Just District, Cornwall, England, UK
Corundum var: Sapphire
Formula:	Al2O3
Locality:	Carbis Bay sands, Carbis Bay, Lelant, St Ives District, Cornwall, England, UK
Cosalite
Formula:	Pb2Bi2S5
Localities:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Bonser Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Photo: © Peter Haas. Cosalite from Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Cotunnite
Formula:	PbCl2
Localities:	Falmouth Harbour, Falmouth, Helford - Falmouth Area, Wendron & Falmouth District, Cornwall, England, UK Hope's Nose, Torquay, South Devon, Devon, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK
Covellite
Formula:	CuS
Localities:	Reported from at least 45 localities in this region.
Photo: © Richard De Nul. Covellite from Holmbush Mine, Callington United Mines, Stoke Climsland, Callington District, Cornwall, England, UK
Crandallite
Formula:	CaAl3(PO4)2(OH)5 · H2O
Locality:	Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: © Paul De Bondt. Crandallite from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
'Crandallite Subgroup'
Locality:	Hemerdon Mine (Hemerdon Bal Mine; Hemerdon Ball Mine), Plympton, Tavistock District, Devon, England, UK
Photo: © Steve Rust. Crandallite Subgroup from Hemerdon Mine, Plympton, Tavistock District, Devon, England, UK
Crednerite
Formula:	CuMnO2
Localities:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK Colemans Quarry, Holwell, Somerset, England, UK Wesley Mine, Westbury on Trym, Bristol, England, UK
Photo: © Ian Jones. Crednerite from Torr Works Quarry, Cranmore, Somerset, England, UK
Crocoite
Formula:	Pb(CrO4)
Locality:	Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
Cronstedtite
Formula:	Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
Localities:	Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Maudlin (Wheal Mawdlin; Wheal Magdalen), Lostwithiel, St Austell District, Cornwall, England, UK
Photo: © Steve Rust. Cronstedtite from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Cryptomelane
Formula:	K(Mn4+7Mn3+)O16
Localities:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Iron Crag, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Cubanite
Formula:	CuFe2S3
Localities:	East Pool Mine (Pool Old Bal), East Pool and Agar Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Cumengeite
Formula:	Pb21Cu20Cl42(OH)40 · 6H2O
Localities:	Reported from at least 10 localities in this region.
Photo: © crystal vine. Cumengeite from Falmouth, Helford - Falmouth Area, Wendron & Falmouth District, Cornwall, England, UK
Cummingtonite
Formula:	☐{Mg2}{Mg5}(Si8O22)(OH)2
Localities:	Kenidjack Cliff, St Just, St Just District, Cornwall, England, UK Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Cuprite
Formula:	Cu2O
Localities:	Reported from at least 140 localities in this region.
Photo: © Colleen Thomson. Cuprite from New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
Cuprite var: Chalcotrichite
Formula:	Cu2O
Localities:	Reported from at least 28 localities in this region.
Photo: © Ian Jones. Chalcotrichite from Fowey Consols, Tywardreath, St Austell District, Cornwall, England, UK
Cuprite var: Tile ore
Formula:	Cu2O
Localities:	Reported from at least 7 localities in this region.
Photo: © 2002 Thames Valley Minerals. Tile ore from Cook's Kitchen Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Cuprosklodowskite
Formula:	Cu(UO2)2[HSiO4]2 · 6H2O
Localities:	West Wheal Owles (Cargodna Mine), Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Cuprostibite
Formula:	Cu2(Sb,Tl)
Locality:	Castleside Smelting Mill (slag locality), Castleside, Derwent Valley, North Pennines, Co. Durham, England, UK
Cuprotungstite
Formula:	Cu2(WO4)(OH)2
Localities:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Old Gunnislake Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Buckbarrow Beck Veins, Waberthwaite, Southern Fells, North and Western Region (Cumberland), Cumbria, England, UK
Cyanotrichite
Formula:	Cu4Al2(SO4)(OH)12 · 2H2O
Localities:	Reported from at least 14 localities in this region.
Photo: © Steve Rust. Cyanotrichite from Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Cyrilovite
Formula:	NaFe3+3(PO4)2(OH)2 · 2H2O
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Photo: © Richard De Nul. Cyrilovite from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Danalite
Formula:	Fe2+4(Be3Si3O12)S
Localities:	Reported from at least 6 localities in this region.
Photo: © . Danalite from Camborne - Redruth - St Day District, Cornwall, England, UK
Danburite
Formula:	CaB2Si2O8
Localities:	Cheesewring Quarry, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Datolite
Formula:	Ca(HBSiO5)
Localities:	Reported from at least 9 localities in this region.
Photo: © J.Ralph. Datolite from Parc Bean Cove, Mullion, Lizard Peninsula, Cornwall, England, UK
Delafossite
Formula:	CuFeO2
Locality:	Tolvadden Mine, Marazion, Mount's Bay District, Cornwall, England, UK
Descloizite
Formula:	Pb(Zn,Cu)(VO4)(OH)
Localities:	Greystones Quarry, Lezant, Callington District, Cornwall, England, UK Old Potts Gill Mine, Potts Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Wesley Mine, Westbury on Trym, Bristol, England, UK Whitwell Quarry, Whitwell, Derbyshire, England, UK Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK ? (more information)
Photo: © TVM. Descloizite from Whitwell Quarry, Whitwell, Derbyshire, England, UK
'Desert Rose'
Locality:	Sewage works (Cassington Sewage works), Yarnton, Oxfordshire, England, UK
Devilline (TL)
Formula:	CaCu4(SO4)2(OH)6 · 3H2O
Type Locality:	Cornwall, England, UK
Reference:	Acta Cryst. B28 (1972), 1182
Localities:	Recorded from at least 15 other localities in this region.
Photo: © Steve Rust. Devilline from Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Dewindtite
Formula:	H2Pb3(UO2)2(PO4)4O4 · 12H2O
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Diaboleite (TL)
Formula:	Pb2CuCl2(OH)4
Type Locality:	Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK
Reference:	Mineralogical Magazine (1923): 20, 67-92 (the mineral 78-80); Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 83; Clark, 1993, "Hey's Mineral Index"] [MinRec 27:253]
Localities:	Recorded from at least 7 other localities in this region.
Photo: © 2004 ROM. Diaboleite from Torr Works Quarry, Cranmore, Somerset, England, UK
Diadochite
Formula:	Fe3+2(PO4)(SO4)(OH) · 5H2O
Locality:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
'Diallage'
Localities:	Reported from at least 8 localities in this region.
Diaspore
Formula:	AlO(OH)
Locality:	Kenidjack Cliff, St Just, St Just District, Cornwall, England, UK
Dickite
Formula:	Al2(Si2O5)(OH)4
Localities:	Reported from at least 11 localities in this region.
Photo: © JSS. Dickite from Scarborough, North Yorkshire, England, UK
Digenite
Formula:	Cu9S5
Localities:	Reported from at least 13 localities in this region.
Photo: © . Digenite from Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Diopside
Formula:	CaMgSi2O6
Localities:	Reported from at least 11 localities in this region.
Photo: © Steve Rust. Diopside from Thurstaston Beach, Wirral, Merseyside, England, UK
Djurleite
Formula:	Cu31S16
Localities:	Reported from at least 16 localities in this region.
Photo: © TVM. Djurleite from Gipsy Lane Brickpit, Leicester, Leicestershire, England, UK
Dolomite
Formula:	CaMg(CO3)2
Localities:	Reported from at least 142 localities in this region.
Photo: © Lloyd Llewellyn. Dolomite from Worton Hall Level, Askrigg, Wensleydale, North Pennines, North Yorkshire, England, UK
Dolomite var: Ferroan Dolomite
Locality:	South Mount Mine (Crows-an-Carne Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
Domeykite
Formula:	Cu3As
Localities:	Great Condurrow Mine, Pendarves United Mines, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Carn Brea Mine (incl. Tregajorran Mine), Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Doyleite
Formula:	Al(OH)3
Locality:	Coldstones Quarry, Greenhow, Pateley Bridge District, North Pennines, North Yorkshire, England, UK
Dravite
Formula:	Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities:	Dinas Head, St Merryn, Wadebridge District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Grylls Bunny, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Remfry (Wheal Remfrey) China Clay Pit, Fraddon, St Enoder, St Austell District, Cornwall, England, UK
Photo: © Richard De Nul. Dravite from Meldon Quarry, Okehampton area, Devon, England, UK
Dufrénite
Formula:	Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Localities:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK South Phoenix Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Photo: Dufrénite from Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Dufrénoysite
Formula:	Pb2As2S5
Locality:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK
Duftite
Formula:	PbCu(AsO4)(OH)
Localities:	Reported from at least 9 localities in this region.
Photo: © David Gren. Duftite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Duftite var: Calcio-duftite
Formula:	(Pb,Ca)CuAsO4(OH)
Locality:	Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Dumortierite
Formula:	(Al,Fe3+)7(SiO4)3(BO3)O3
Localities:	Sticklepath, Okehampton area (Northern Dartmoor), Devon, England, UK St Austell District, Cornwall, England, UK
Dundasite
Formula:	PbAl2(CO3)2(OH)4 · H2O
Localities:	Reported from at least 14 localities in this region.
Photo: © Paul Nicholson.. Dundasite from Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
Durangite ?
Formula:	NaAl(AsO4)F
Locality:	Cheesewring Quarry, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK - erroneously reported
Dypingite
Formula:	Mg5(CO3)4(OH)2 · 5H2O
Locality:	Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Edenite
Formula:	{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2
Locality:	Thurstaston Beach, Wirral, Merseyside, England, UK
Edingtonite
Formula:	Ba[Al2Si3O10] · 4H2O
Locality:	More Quarry (Squilver Quarry), Disgwylfa Hill, Moreswood, Hope-Shelve District, Shropshire, England, UK
Photo: © Volker Betz. Edingtonite from More Quarry, Disgwylfa Hill, Moreswood, Hope-Shelve District, Shropshire, England, UK
Elbaite
Formula:	Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Photo: © Richard Unitt. Elbaite from Meldon Aplite Quarry, Okehampton area, Devon, England, UK
Elyite
Formula:	Pb4Cu(SO4)O2(OH)4 · H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © De Nul, Richard. Elyite from Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
Emplectite
Formula:	CuBiS2
Locality:	North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Enargite
Formula:	Cu3AsS4
Localities:	South Crofty Mine (South Wheal Crofty), Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Gregory Mine, Overton Hall, Ashover, Derbyshire, England, UK Clevedon Beach, Clevedon, Somerset, England, UK Engine Vein Mine, Alderley Edge, Cheshire, England, UK
Photo: © Richard De Nul. Enargite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Enstatite
Formula:	MgSiO3
Localities:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK Calton Hill Quarry, Blackwell-in-the-Peak, Derbyshire, England, UK
Enstatite var: Bronzite
Formula:	(Mg,Fe2+)2[SiO3]2
Locality:	Coverack Cove, Coverack, St Keverne, Lizard Peninsula, Cornwall, England, UK
'Enysite'
Localities:	Trevaunance Cove, St Agnes, St Agnes District, Cornwall, England, UK Polberro Mines, St Agnes Consols (Polberro Consols), St Agnes, St Agnes District, Cornwall, England, UK
Photo: © Richard De Nul. Enysite from Trevaunance Cove, St Agnes, St Agnes District, Cornwall, England, UK
Epidote
Formula:	{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Localities:	Reported from at least 37 localities in this region.
Photo: © C.Thomson 2008. Epidote from New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
Epistilbite
Formula:	CaAl2Si6O16 · 5H2O
Locality:	Park Brow Quarry, Dockray, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
Epsomite (TL)
Formula:	MgSO4 · 7H2O
Type Locality:	Epsom, Surrey, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 512.
Localities:	Recorded from at least 4 other localities in this region.
Photo: © HW. Epsomite from Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Ericaite ?
Formula:	Fe2+3(B7O13)Cl
Locality:	Boulby Mine, Loftus, North Yorkshire, England, UK - erroneously reported
Erythrite
Formula:	Co3(AsO4)2 · 8H2O
Localities:	Reported from at least 49 localities in this region.
Photo: © De Nul, Richard. Erythrite from Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Ettringite
Formula:	Ca6Al2(SO4)3(OH)12 · 26H2O
Localities:	Tresavean Mine, Lanner, Camborne - Redruth - St Day District, Cornwall, England, UK Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK Tindale Fell Spelter Works (slag locality), Tindale (Tindale Fell), City of Carlisle District, Cumbria, England, UK
Photo: © Steve Rust. Ettringite from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Eucairite
Formula:	AgCuSe
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Euclase
Formula:	BeAl(SiO4)(OH)
Localities:	Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK (more information)
Photo: © G. Curtis. Euclase from Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Eucryptite
Formula:	LiAlSiO4
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Eudidymite
Formula:	Na2Be2Si6O15 · H2O
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Eulytine
Formula:	Bi4(SiO4)3
Locality:	Buckbarrow Beck Veins, Waberthwaite, Southern Fells, North and Western Region (Cumberland), Cumbria, England, UK
'Evansite'
Formula:	Al3(PO4)(OH)6 · 6H2O
Locality:	Ratcliffe Wood, Macclesfield, Cheshire, England, UK
Famatinite
Formula:	Cu3SbS4
Locality:	Scaleber Bridge, Settle - Malham Area, Craven District, North Pennines, North Yorkshire, England, UK
Faustite
Formula:	(Zn,Cu)Al6(PO4)4(OH)8 · 4H2O
Locality:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Fayalite
Formula:	Fe2+2SiO4
Localities:	Thurstaston Beach, Wirral, Merseyside, England, UK The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK
'Feldspar Group'
Localities:	Reported from at least 32 localities in this region.
Felsőbányaite
Formula:	Al4(SO4)(OH)10 · 4H2O
Localities:	Clifton Hill, Brighton, East Sussex, England, UK Irchester, Northamptonshire, England, UK Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire (Bristol; Avon), England, UK Chickerell brick pit, Chickerell, Dorset, England, UK
Photo: Felsőbányaite from Chickerell brick pit, Chickerell, Dorset, England, UK
Ferberite
Formula:	FeWO4
Localities:	Reported from at least 15 localities in this region.
Photo: Ferberite from Hemerdon Mine, Plympton, Tavistock District, Devon, England, UK
Feroxyhyte ?
Formula:	Fe3+O(OH)
Locality:	The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK - erroneously reported
Ferricopiapite
Formula:	Fe5(SO4)6O(OH) · 20H2O
Locality:	Groverake Mine, Rookhope District, Weardale, North Pennines, Co. Durham, England, UK
Ferrimolybdite
Formula:	Fe2(MoO4)3 · nH2O
Localities:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Kit Hill Mine (Kit Hill Consols), Kit Hill United Mines (incl. Kit Hill Great Consols), Stoke Climsland, Callington District, Cornwall, England, UK
Photo: © De Nul, Richard. Ferrimolybdite from Kit Hill United Mines, Stoke Climsland, Callington District, Cornwall, England, UK
Ferristrunzite
Formula:	Fe3+Fe3+2(PO4)2(OH)3 · 5H2O
Locality:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
Ferro-Actinolite
Formula:	☐{Ca2}{Fe2+5}(Si8O22)(OH)2
Locality:	Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Ferroceladonite
Formula:	K(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Ferro-hornblende
Formula:	☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Locality:	Botallack, St Just, St Just District, Cornwall, England, UK
Ferrokesterite (TL)
Formula:	Cu2(Fe,Zn)SnS4
Type Locality:	Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Reference:	Can.Min.(1989) 27, 673-688
Photo: © De Nul, Richard. Ferrokesterite from Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
'Ferro-sadanagaite'
Formula:	{Na}{Ca2}{Fe3Al2}(Al3Si5O22)(OH)2
Locality:	Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Ferrostrunzite
Formula:	Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Locality:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
Photo: © Thomas Witzke. Ferrostrunzite from Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, St Agnes District, Cornwall, England, UK
Feruvite
Formula:	Ca(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)
Locality:	Grylls Bunny, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Fiedlerite
Formula:	Pb3FCl4(OH) · H2O
Locality:	The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK
Fischesserite
Formula:	Ag3AuSe2
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
'Flint'
Localities:	Reported from at least 13 localities in this region.
Photo: © Martin Stolworthy. Flint from Sidestrand beach, Cromer, Norfolk, England, UK
Florencite-(La)
Formula:	LaAl3(PO4)2(OH)6
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Fluellite (TL)
Formula:	Al2(PO4)F2(OH) · 7H2O
Type Locality:	Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 125; American Mineralogist (1966): 51: 1579; Embrey & Symes (1987), 52 - "Minerals of Cornwall and Devon"
Localities:	Recorded from at least 1 other locality in this region.
Fluorapatite
Formula:	Ca5(PO4)3F
Localities:	Reported from at least 23 localities in this region.
Photo: © Richard De Nul. Fluorapatite from Craddock Moor Mine, Craddock Moor, St Cleer, Liskeard District, Cornwall, England, UK
Fluorapatite var: Carbonate-rich Fluorapatite
Formula:	Ca5(PO4,CO3)3(F,O)
Localities:	Reported from at least 27 localities in this region.
Photo: © Ian Jones. Carbonate-rich Fluorapatite from Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK
Fluorapatite var: Francolite
Localities:	Reported from at least 23 localities in this region.
Photo: Francolite from Fowey Consols, Tywardreath, St Austell District, Cornwall, England, UK
Fluorapatite var: Holmbushite
Locality:	Holmbush Mine, Callington United Mines (incl. Emmens United Mines), Stoke Climsland, Callington District, Cornwall, England, UK
Photo: © De Nul, Richard. Holmbushite from Holmbush Mine, Callington United Mines, Stoke Climsland, Callington District, Cornwall, England, UK
Fluorapatite var: Mn-bearing Fluorapatite
Formula:	(Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn3+]O4)3(F,Cl,OH)
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Fluorite
Formula:	CaF2
Localities:	Reported from at least 420 localities in this region.
Photo: © Joseph A. Freilich. Fluorite from Rogerley Mine, Rogerley Quarry, Frosterley, Weardale, North Pennines, Co. Durham, England, UK
Fluorite var: Blue John
Localities:	Old Tor Mine, Castleton, Derbyshire, England, UK Treak Cliff Mine (Treak Cliff Cavern), Castleton, Derbyshire, England, UK Wall Shaft Mine, Castleton, Derbyshire, England, UK
Photo: © Jorge M. Alves. Blue John from Old Tor Mine, Castleton, Derbyshire, England, UK
Fluorite var: Chlorophane
Localities:	East Pool Mine (Pool Old Bal), East Pool and Agar Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Pednandrea Mine (Pedn-an-Drea Mine), Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: Chlorophane from East Pool Mine, East Pool and Agar Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Fornacite
Formula:	Pb2Cu(CrO4)(AsO4)(OH)
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Photo: © Rick Turner, 2006. Fornacite from Torr Works Quarry, Cranmore, Somerset, England, UK
Fraipontite
Formula:	(Zn,Al)3((Si,Al)2O5)(OH)4
Localities:	Virgin Moss Mine, Redmire, Wensleydale, North Pennines, North Yorkshire, England, UK Silver Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Copperthwaite Vein, Marrick, Swaledale, North Pennines, North Yorkshire, England, UK
Francevillite
Formula:	(Ba,Pb)(UO2)2(VO4)2 · 5H2O
Locality:	South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Freibergite
Formula:	Ag6[Cu4Fe2]Sb4S13-x
Locality:	Silver Vein Mine (Beacon Hill Mine; Wheal Fortescue), Lostwithiel, St Austell District, Cornwall, England, UK
Frondelite
Formula:	Mn2+Fe3+4(PO4)3(OH)5
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Fülöppite
Formula:	Pb3Sb8S15
Locality:	Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Galena
Formula:	PbS
Localities:	Reported from at least 656 localities in this region.
Photo: © Steve Rust. Galena from Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire, England, UK
Galena var: Argentiferous Galena
Localities:	Reported from at least 17 localities in this region.
Photo: © Bernie Millington. Argentiferous Galena from Wheal Exmouth, Christow, Dartmoor & Teign Valley District, Devon, England, UK
Galena var: Plumbeine
Locality:	Wheal Hope (incl. South Wheal Budnick; West Wheal Hope), Hendra Croft, Perranzabuloe, St Agnes District, Cornwall, England, UK
Photo: © Paul De Bondt. Plumbeine from Wheal Hope, Hendra Croft, Perranzabuloe, St Agnes District, Cornwall, England, UK
Galenobismutite
Formula:	PbBi2S4
Localities:	Gupworthy Mine, Brompton Regis, Brendon Hills, Somerset, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK ? (more information)
'Ganomatite'
Locality:	Buckfastleigh, Dartmoor & Teign Valley District, Devon, England, UK
'Garnet'
Formula:	X3Z2(SiO4)3
Localities:	Reported from at least 37 localities in this region.
Photo: © Bernie Millington. Garnet from Meldon Reservoir, Okehampton area, Devon, England, UK
Geerite
Formula:	Cu8S5
Locality:	Judkins Quarry, Nuneaton, Warwickshire, England, UK
Genthelvite
Formula:	Zn4(Be3Si3O12)S
Locality:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK
Geocronite
Formula:	Pb14(Sb,As)6S23
Locality:	Treore Mine, St Endellion, Wadebridge District, Cornwall, England, UK
Gersdorffite
Formula:	NiAsS
Localities:	Reported from at least 10 localities in this region.
Gibbsite
Formula:	Al(OH)3
Localities:	Reported from at least 8 localities in this region.
Gladite
Formula:	PbCuBi5S9
Locality:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Glaucodot
Formula:	(Co0.50Fe0.50)AsS
Localities:	Cobalt Mine, Scar Crag, Causey Pike, Braithwaite District, North and Western Region (Cumberland), Cumbria, England, UK Paddy End Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Glauconite
Formula:	(K,Na)(Fe3+,Al,Mg)2((Si,Al)4O10)(OH)2
Localities:	Reported from at least 10 localities in this region.
'Gmelinite'
Locality:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK
Goethite
Formula:	α-Fe3+O(OH)
Localities:	Reported from at least 204 localities in this region.
Photo: © De Nul, Richard. Goethite from Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Gold
Formula:	Au
Localities:	Reported from at least 46 localities in this region.
Photo: © Peter Haas. Gold from Hope's Nose, Torquay, South Devon, Devon, England, UK
Gold var: Palladian Gold
Formula:	(Au,Pd)
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Photo: Palladian Gold from Hope's Nose, Torquay, South Devon, Devon, England, UK
Goslarite
Formula:	ZnSO4 · 7H2O
Localities:	Reported from at least 6 localities in this region.
Graphite
Formula:	C
Localities:	Reported from at least 15 localities in this region.
Photo: © Lloyd Llewellyn. Graphite from Wad Mine, Seathwaite, Borrowdale, North and Western Region, Cumbria, England, UK
Greenockite
Formula:	CdS
Localities:	Reported from at least 15 localities in this region.
Photo: © De Nul, Richard. Greenockite from Wellhopehead Mine, West Allendale, North Pennines, Northumberland, England, UK
Greigite
Formula:	Fe2+Fe3+2S4
Locality:	Treore Mine, St Endellion, Wadebridge District, Cornwall, England, UK
Grossular
Formula:	Ca3Al2(SiO4)3
Localities:	Reported from at least 8 localities in this region.
Photo: © Chris Popham. Grossular from Meldon Mine, Okehampton area, Devon, England, UK
Grossular var: Stannoan Grossular
Formula:	(Ca,Sn)3Al2(SiO4)3
Locality:	Crowns Rock, Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Grunerite
Formula:	☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2
Locality:	Botallack, St Just, St Just District, Cornwall, England, UK
Gypsum
Formula:	CaSO4 · 2H2O
Localities:	Reported from at least 119 localities in this region.
Photo: © J.Ralph 2001. Gypsum from Geevor Mine, Pendeen, St Just, St Just District, Cornwall, England, UK
Gypsum var: Alabaster
Localities:	Chellaston Hill, Derby, Derbyshire, England, UK Newark on Trent, Nottinghamshire, England, UK Tutbury, Staffordshire, England, UK East Leake Quarry, East Leake, Nottinghamshire, England, UK Beacon Hill, Gotham, Nottinghamshire, England, UK
Gypsum var: Selenite
Localities:	Reported from at least 52 localities in this region.
Photo: © Bill Gordon. Selenite from Herne Bay, Canterbury, Kent, England, UK
Halite
Formula:	NaCl
Localities:	Reported from at least 15 localities in this region.
Photo: Halite from Gunthorpe Weir, East Bridgford, Nottinghamshire, England, UK
'Halloysite'
Formula:	Al2(Si2O5)(OH)4
Localities:	Reported from at least 11 localities in this region.
Halotrichite ?
Formula:	FeAl2(SO4)4 · 22H2O
Locality:	Mealbank Quarry, Ingleton, Craven District, North Pennines, North Yorkshire, England, UK - erroneously reported
Photo: © Richard De Nul. Halotrichite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Harmotome
Formula:	(Ba0.5,Ca0.5,K,Na)5[Al5Si11O32] · 12H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © Steve Rust. Harmotome from Settlingstones Mine, Fourstones, Tyne Valley, Northumberland, England, UK
'Hartine'
Locality:	Wigan, Lancashire, England, UK
Hastingsite
Formula:	{Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2
Localities:	Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK
Photo: © Paul De Bondt. Hastingsite from Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK
'Hatchettite'
Localities:	Pelton Colliery, Chester-le-Street, Durham Coalfield, Co. Durham, England, UK Urpeth Colliery, Chester-le-Street, Durham Coalfield, Co. Durham, England, UK
Hausmannite
Formula:	MnMn2O4
Localities:	Reported from at least 6 localities in this region.
Hawleyite
Formula:	CdS
Locality:	Fall Hill Quarry, Milltown, Ashover, Derbyshire, England, UK
Hedenbergite
Formula:	CaFe2+Si2O6
Localities:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Tregullan Mine (Tregollan Mine), Lanivet Consols (Tretoil Mine), Lanivet, St Austell District, Cornwall, England, UK Red-a-Ven Mine, Okehampton area (Northern Dartmoor), Devon, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Great Retallack Mine, Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
Photo: © Paul De Bondt. Hedenbergite from Meldon Aplite Quarry, Okehampton area, Devon, England, UK
Hedleyite
Formula:	Bi7Te3
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Hedyphane
Formula:	Pb3Ca2(AsO4)3Cl
Localities:	Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Helvine
Formula:	Mn2+4(Be3Si3O12)S
Localities:	Bodmin Wheal Mary (Bodmin Consols; Bodmin United), Lanivet, St Austell District, Cornwall, England, UK Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK Wheal Betsy, Lanivet, St Austell District, Cornwall, England, UK Red-a-Ven Mine, Okehampton area (Northern Dartmoor), Devon, England, UK Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK (more information)
Hematite
Formula:	Fe2O3
Localities:	Reported from at least 275 localities in this region.
Photo: © Rob Lavinsky. Hematite from Egremont, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Hematite var: Kidney Ore
Locality:	Florence Mine, Egremont, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Paul De Bondt. Kidney Ore from Egremont, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Hematite var: Specularite
Localities:	Reported from at least 30 localities in this region.
Photo: © Peter Haas. Specularite from Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Hemimorphite
Formula:	Zn4Si2O7(OH)2 · H2O
Localities:	Reported from at least 61 localities in this region.
Photo: © C.Thomson. Hemimorphite from Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
Hentschelite
Formula:	CuFe3+2(PO4)2(OH)2
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Hercynite
Formula:	Fe2+Al2O4
Locality:	Goonhilly Downs, Mawgan-in-Meneage, Lizard Peninsula, Cornwall, England, UK
Hercynite var: Picotite
Formula:	(Fe,Mg)(Al,Cr)2O4
Locality:	Calton Hill Quarry, Blackwell-in-the-Peak, Derbyshire, England, UK
Herderite
Formula:	CaBePO4(F,OH)
Localities:	Colcerrow Quarry (Gready Quarry), Lanlivery, St Austell District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK ? (more information)
Herzenbergite
Formula:	(Sn,Pb)SnS2
Locality:	Halvasso Quarry (Kessel Down Quarry; Halvosso quarry), Longdowns, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK
Hetaerolite
Formula:	ZnMn2O4
Locality:	Eastern Cliff, Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK
Photo: © De Nul, Richard. Hetaerolite from Eastern Cliff, Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK
Heteromorphite
Formula:	Pb7Sb8S19
Locality:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK
'Heulandite'
Localities:	Reported from at least 11 localities in this region.
Photo: © G.Curtis. Heulandite from Lelant, St Ives District, Cornwall, England, UK
Heulandite-Ca
Formula:	(Ca,Na)2-3Al3(Al,Si)2Si13O36 · 12H2O
Locality:	Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Heulandite-K
Formula:	(K,Na,Ca)2-3Al3(Al,Si)2Si13O36 · 12H2O
Locality:	Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Hidalgoite
Formula:	PbAl3(AsO4)(SO4)(OH)6
Localities:	Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Hingston Down Consols, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK ? (more information)
Photo: © Steve Rust. Hidalgoite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Hilgardite
Formula:	Ca2B5O9Cl · H2O
Locality:	Boulby Mine, Loftus, North Yorkshire, England, UK
Photo: © Leon Hupperichs. Hilgardite from Boulby Mine, Loftus, North Yorkshire, England, UK
Hinsdalite
Formula:	PbAl3(PO4)(SO4)(OH)6
Localities:	Old Potts Gill Mine, Potts Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Iron Crag, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Saddleback upper trial, Blencathra, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK Saddleback Old Mine, Blencathra, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
Hisingerite
Formula:	Fe3+2(Si2O5)(OH)4 · 2H2O
Localities:	Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Hollandite
Formula:	Ba(Mn4+6Mn3+2)O16
Locality:	Saddleback upper trial, Blencathra, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
'Hornblende'
Localities:	Reported from at least 41 localities in this region.
Hübnerite
Formula:	MnWO4
Localities:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Grainsgill, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Huemulite
Formula:	Na4Mg(V10O28) · 24H2O
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Humboldtine
Formula:	Fe2+(C2O4) · 2H2O
Locality:	Wheal Pendarves, Killivose, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Hydrobasaluminite (TL)
Formula:	Al4(SO4)(OH)10 · 12-36H2O
Type Locality:	Lodge Pit, Irchester, Northamptonshire, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 586.
Localities:	Recorded from at least 1 other locality in this region.
Hydrocerussite
Formula:	Pb3(CO3)2(OH)2
Localities:	Reported from at least 25 localities in this region.
Photo: © Ian Jones. Hydrocerussite from Torr Works Quarry, Cranmore, Somerset, England, UK
'Hydrogrossular'
Locality:	Cadger Well Level, Harwood, Teesdale, North Pennines, Co. Durham, England, UK
Hydrokenoelsmoreite
Formula:	◻2W2O6(H2O)
Localities:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Hemerdon Mine (Hemerdon Bal Mine; Hemerdon Ball Mine), Plympton, Tavistock District, Devon, England, UK
Photo: © Steve Rust. Hydrokenoelsmoreite from Hemerdon Mine, Plympton, Tavistock District, Devon, England, UK
Hydrokenoelsmoreite var: Alumotungstite
Locality:	Hemerdon Mine (Hemerdon Bal Mine; Hemerdon Ball Mine), Plympton, Tavistock District, Devon, England, UK
Hydrokenoelsmoreite var: Ferritungstite
Localities:	Hemerdon Mine (Hemerdon Bal Mine; Hemerdon Ball Mine), Plympton, Tavistock District, Devon, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Photo: © Ian Jones. Ferritungstite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Hydromagnesite
Formula:	Mg5(CO3)4(OH)2 · 4H2O
Localities:	Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Steve Rust. Hydromagnesite from Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Hydroniumjarosite ?
Formula:	(H3O)Fe3+3(SO4)2(OH)6
Locality:	Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK - erroneously reported
Hydroniumpharmacosiderite (TL)
Formula:	(H3O)Fe4(AsO4)3(OH)4 · 4H2O
Type Locality:	Cornwall, England, UK
Reference:	Mills, S. J., Kampf, A. R., Williams, P. A., Leverett, P., Poirier, G., Raudsepp, M. & Francis, C. A. (2010): Hydroniumpharmacosiderite, a new member of the pharmacosiderite supergroup from Cornwall, UK: structure and description. Mineralogical Magazine, 74, 863-869.
'Hydrophilite'
Locality:	Guy's Cliff, Warwickshire, England, UK
'Hydroscarbroite' (TL)
Formula:	Al14(CO3)3(OH)36 · nH2O
Type Locality:	South Bay, Scarborough, North Yorkshire, England, UK
Reference:	Mineralogical Magazine 1960 32 : 353-362.
Hydrotalcite
Formula:	Mg6Al2(OH)16[CO3] · 4H2O
Locality:	East Harptree Lead Mine, East Harptree, Somerset, England, UK
Hydroxylapatite
Formula:	Ca5(PO4)3(OH)
Locality:	North Goonbarrow China Clay Pit, Bugle, Treverbyn, St Austell District, Cornwall, England, UK
Hydrozincite
Formula:	Zn5(CO3)2(OH)6
Localities:	Reported from at least 34 localities in this region.
Photo: © Steve Rust. Hydrozincite from Hilton Mine, Scordale, Hilton, Escarpment District, North Pennines, South Eastern Region, Cumbria, England, UK
'Hypersthene'
Formula:	(Mg,Fe)SiO3
Localities:	Thurstaston Beach, Wirral, Merseyside, England, UK Coverack Cove, Coverack, St Keverne, Lizard Peninsula, Cornwall, England, UK Barwell meteorite, Barwell, Leicestershire, England, UK
Idaite
Formula:	Cu5FeS6
Localities:	Clevedon Beach, Clevedon, Somerset, England, UK Judkins Quarry, Nuneaton, Warwickshire, England, UK
Ikunolite
Formula:	Bi4(S,Se)3
Locality:	North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Illite
Formula:	K0.65Al2.0[ ][Al0.65Si3.35O10](OH)2
Localities:	Reported from at least 17 localities in this region.
Ilmenite
Formula:	Fe2+TiO3
Localities:	Reported from at least 14 localities in this region.
Photo: © Ben Grguric. Ilmenite from Tregonwell Mill, Manaccan, Lizard Peninsula, Cornwall, England, UK
Ilmenite var: Iserine
Localities:	Seacombe Ferry, Wallasey, Merseyside, England, UK Hunstanton, Norfolk, England, UK
Ilmenite var: Manaccanite
Localities:	Tregonwell Mill, Manaccan, Lizard Peninsula, Cornwall, England, UK Gwenter (Gwinter; Gwendra), St Keverne, Lizard Peninsula, Cornwall, England, UK Lanarth, St Keverne, Lizard Peninsula, Cornwall, England, UK
Photo: © J.Ralph. Manaccanite from Tregonwell Mill, Manaccan, Lizard Peninsula, Cornwall, England, UK
'Ilsemannite' ?
Formula:	Mo3O8 · nH2O
Locality:	Billingham anhydrite mine, Billingham, Co. Durham, England, UK - erroneously reported
Ilvaite
Formula:	CaFe2+2Fe3+(Si2O7)O(OH)
Locality:	Wheal Messar, Lanivet Consols (Tretoil Mine), Lanivet, St Austell District, Cornwall, England, UK
Ingodite
Formula:	Bi2TeS
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Iron var: Kamacite
Formula:	(Fe,Ni)
Locality:	Barwell meteorite, Barwell, Leicestershire, England, UK
Isomertieite
Formula:	Pd11Sb2As2
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Ixiolite
Formula:	(Ta,Nb,Sn,Fe,Mn)4O8
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Jamesonite (TL)
Formula:	Pb4FeSb6S14
Type Locality:	Cornwall, England, UK
Reference:	Can. Min. (1987), 25, 667
Localities:	Recorded from at least 22 other localities in this region.
Photo: © Ian Jones. Jamesonite from Port Quin Mine, Port Quin, St Minver, Wadebridge District, Cornwall, England, UK
Jarosite
Formula:	KFe3+ 3(SO4)2(OH)6
Localities:	Reported from at least 39 localities in this region.
Photo: © Steve Rust. Jarosite from Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, St Agnes District, Cornwall, England, UK
Jeanbandyite
Formula:	(Fe2+,Mn2+)[Sn4+(OH)6]
Localities:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Photo: © 2004 JBS. Jeanbandyite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Johannite
Formula:	Cu(UO2)2(SO4)2(OH)2 · 8H2O
Localities:	North Wheal Basset, Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK South Wheal Basset (West Wheal Buller), Lower Carnkie, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK ? (more information)
Photo: © Paul De Bondt. Johannite from Geevor Mine, Pendeen, St Just, St Just District, Cornwall, England, UK
Johannsenite
Formula:	CaMn2+Si2O6
Locality:	Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK
'Joséite'
Formula:	Bi4TeS2
Localities:	Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Bonser Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK
Photo: © 2001 John H. Betts. Joséite from Caldbeck Fells, North and Western Region, Cumbria, England, UK
'Joséite-B'
Formula:	Bi4Te2S
Localities:	Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Kaersutite
Formula:	{Na}{Ca2}{Mg3AlTi}(Al2Si6O22)O2
Locality:	St Minver, Wadebridge District, Cornwall, England, UK
Kaňkite
Formula:	FeAsO4 · 3.5H2O
Locality:	South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Kaolinite
Formula:	Al2(Si2O5)(OH)4
Localities:	Reported from at least 62 localities in this region.
Photo: © Ian Jones. Kaolinite from North Goonbarrow China Clay Pit, Bugle, Treverbyn, St Austell District, Cornwall, England, UK
Kasolite
Formula:	Pb(UO2)[SiO4] · H2O
Localities:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Kentrolite
Formula:	Pb2Mn3+2(Si2O7)O2
Localities:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK Colemans Quarry, Holwell, Somerset, England, UK ? (more information)
Photo: © Rick Turner, 2006. Kentrolite from Torr Works Quarry, Cranmore, Somerset, England, UK
Kermesite
Formula:	Sb2S2O
Localities:	Poltreworgey Mine, St Endellion, Wadebridge District, Cornwall, England, UK Wanthwaite Mine, St John's in the Vale, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Cutlinwith Farm, Landrake, Saltash, Callington District, Cornwall, England, UK
'Kerolite'
Formula:	(Mg,Ni)3Si4O10(OH)2 · H2O
Locality:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK
Kesterite
Formula:	Cu2(Zn,Fe)SnS4
Localities:	St Michael's Mount, Marazion, Mount's Bay District, Cornwall, England, UK Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Photo: © Christopher O'Neill. Kesterite from Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
'K Feldspar'
Localities:	Halvasso Quarry (Kessel Down Quarry; Halvosso quarry), Longdowns, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK Wheal Reeth, Boscreege, Germoe, Mount's Bay District, Cornwall, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
'K Feldspar var: Adularia'
Formula:	KAlSi3O8
Localities:	Reported from at least 12 localities in this region.
Photo: © Steve Rust. Adularia from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Kidwellite
Formula:	NaFe3+9(PO4)6(OH)11 · 3H2O
Locality:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Kieserite
Formula:	MgSO4 · H2O
Localities:	Boulby Mine, Loftus, North Yorkshire, England, UK Eskdale No. 3 borehole (Sleights), Eskdale, North Yorkshire, England, UK
Kintoreite
Formula:	PbFe3+3(PO4)2(OH,H2O)6
Locality:	Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Klockmannite
Formula:	CuSe
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Koechlinite
Formula:	Bi2MoO6
Locality:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Kombatite
Formula:	Pb14(VO4)2O9Cl4
Locality:	Wesley Mine, Westbury on Trym, Bristol, England, UK
Köttigite
Formula:	Zn3(AsO4)2 · 8H2O
Locality:	Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
'Köttigite-Parasymplesite Series' ?
Locality:	West Wheal Mary Ann (West Mary Ann Mine), Roseland, Menheniot, Liskeard District, Cornwall, England, UK - erroneously reported
Photo: © Tony Aldworth. Köttigite-Parasymplesite Series from West Wheal Mary Ann, Roseland, Menheniot, Liskeard District, Cornwall, England, UK
Kröhnkite
Formula:	Na2Cu(SO4)2 · 2H2O
Locality:	Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Krupkaite
Formula:	PbCuBi3S6
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Ktenasite
Formula:	Zn(Cu,Zn)4(SO4)2(OH)6 · 6H2O
Localities:	Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK ? (more information)
Photo: © Steve Rust. Ktenasite from Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Kuramite
Formula:	Cu3SnS4
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Kyanite
Formula:	Al2(SiO4)O
Localities:	Polkernogo, St Keverne, Lizard Peninsula, Cornwall, England, UK Pistil Ogo, Lizard Peninsula, Cornwall, England, UK Wasdale Head, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Laitakarite
Formula:	Bi4Se2S
Locality:	Bonser Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK
Lanarkite
Formula:	Pb2(SO4)O
Localities:	Reported from at least 8 localities in this region.
Photo: Lanarkite from Caldbeck Fells, North and Western Region, Cumbria, England, UK
Langisite
Formula:	(Co,Ni)As
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Langite (TL)
Formula:	Cu4(SO4)(OH)6 · 2H2O
Type Locality:	Fowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath, St Austell District, Cornwall, England, UK
Reference:	No reference listed
Localities:	Recorded from at least 55 other localities in this region.
Photo: © Richard De Nul. Langite from Gunnislake Clitters Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Laumontite
Formula:	CaAl2Si4O12 · 4H2O
Localities:	Reported from at least 10 localities in this region.
Laurionite
Formula:	PbCl(OH)
Localities:	Reported from at least 6 localities in this region.
Photo: © Steve Rust. Laurionite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Lautenthalite
Formula:	PbCu4(SO4)2(OH)6 · 3H2O
Locality:	Force Crag Mine (Force Craig Mine), Coledale, Braithwaite District, North and Western Region (Cumberland), Cumbria, England, UK
Lavendulan
Formula:	NaCaCu5(AsO4)4Cl · 5H2O
Localities:	Reported from at least 7 localities in this region.
Photo: © Steve Rust. Lavendulan from Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Lead
Formula:	Pb
Localities:	Hope's Nose, Torquay, South Devon, Devon, England, UK The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK Bollihope lead smelter (Bollihope Common; slag locality), Weardale, North Pennines, Co. Durham, England, UK Ivybridge, South Devon, Devon, England, UK ? (more information)
Leadhillite
Formula:	Pb4(CO3)2(SO4)(OH)2
Localities:	Reported from at least 26 localities in this region.
Photo: © Ian Jones. Leadhillite from Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
'Lechatelierite var: Fulgurite'
Locality:	Macclesfield, Cheshire, England, UK
Lepidocrocite
Formula:	γ-Fe3+O(OH)
Localities:	Reported from at least 22 localities in this region.
Photo: © Steve Rust. Lepidocrocite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Lepidolite
Localities:	Reported from at least 8 localities in this region.
Leucophanite
Formula:	NaCaBeSi2O6F
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Leucophosphite
Formula:	KFe3+2(PO4)2(OH) · 2H2O
Localities:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Photo: © Steve Rust. Leucophosphite from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
'Leucoxene'
Localities:	Burtness Wood, Buttermere, Lorton District, North and Western Region (Cumberland), Cumbria, England, UK Greenscoe Quarry, Dalton in Furness, South Western Region (Furness), Cumbria, England, UK
Libethenite
Formula:	Cu2(PO4)(OH)
Localities:	Reported from at least 19 localities in this region.
Photo: © Steve Rust. Libethenite from West Wheal Virgin, Great Consolidated Mines, Clifford Amalgamated Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Liebigite
Formula:	Ca2(UO2)(CO3)3 · 11H2O
Locality:	Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Likasite
Formula:	Cu3(NO3)(OH)5 · 2H2O
Locality:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Photo: © Knut Eldjarn. Likasite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
'Limonite'
Formula:	FeO(OH) · nH2O
Localities:	Reported from at least 196 localities in this region.
Photo: © TVM. Limonite from Tenter Hill, Bramham, West Yorkshire, England, UK
Linarite
Formula:	PbCu(SO4)(OH)2
Localities:	Reported from at least 64 localities in this region.
Photo: © Steve Rust. Linarite from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Liroconite (TL)
Formula:	Cu2Al(AsO4)(OH)4 · 4H2O
Type Locality:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Habit:	most typically as flattened bipyramids
Colour:	blue
Reference:	Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Am.Min.: 36:484 (1951); Rocks & Min.: 60(1):24
Localities:	Recorded from at least 10 other localities in this region.
Photo: © François Périnet. Liroconite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
'Liskeardite' (TL)
Formula:	(Al,Fe3+)3(AsO4)(OH)6 · 5H2O
Type Locality:	Marke Valley Mine, Upton Cross, Linkinhorne, Liskeard District, Cornwall, England, UK
Reference:	Bulletin de la Société française de Minéralogie et de Cristallographie (1952): 75: 71.
Localities:	Recorded from at least 3 other localities in this region.
Photo: © Steve Rust. Liskeardite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Litharge
Formula:	PbO
Localities:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK Surrender Mine, Reeth, Swaledale, North Pennines, North Yorkshire, England, UK Millclose Mine, South Darley, Derbyshire, England, UK Bollihope lead smelter (Bollihope Common; slag locality), Weardale, North Pennines, Co. Durham, England, UK
Photo: © Steve Rust. Litharge from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Lithiophorite
Formula:	(Al,Li)MnO2(OH)2
Localities:	Clews Gill, Ennerdale, North and Western Region (Cumberland), Cumbria, England, UK Saddleback upper trial, Blencathra, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
'Lithomarge'
Localities:	Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Cook's Kitchen Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Tincroft Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: © Paul De Bondt. Lithomarge from Cook's Kitchen Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Lizardite (TL)
Formula:	Mg3(Si2O5)(OH)4
Type Locality:	Eastern Cliff, Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK
Reference:	No reference listed
Localities:	Recorded from at least 1 other locality in this region.
Löllingite
Formula:	FeAs2
Localities:	Reported from at least 16 localities in this region.
Photo: © Richard De Nul. Löllingite from Ivy Tor Mine, Belstone, Okehampton area, Devon, England, UK
Ludlamite (TL)
Formula:	(Fe,Mn,Mg)3(PO4)2 · 4H2O
Type Locality:	Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Phil. Mag., 5th ser. (1877): 3, 52; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 953; Embrey & Symes (1987) "Minerals of Cornwall and Devon": 112.
Photo: © . Ludlamite from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Luzonite
Formula:	Cu3AsS4
Locality:	Scaleber Bridge, Settle - Malham Area, Craven District, North Pennines, North Yorkshire, England, UK
Macedonite ?
Formula:	PbTiO3
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK - erroneously reported
Mackinawite
Formula:	(Fe,Ni)9S8
Locality:	The Rill, Mullion, Lizard Peninsula, Cornwall, England, UK
Macphersonite
Formula:	Pb4(CO3)2(SO4)(OH)2
Locality:	Red Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Maghemite
Formula:	Fe3+2O3
Locality:	Derbyshire, England, UK
Magnesite
Formula:	MgCO3
Localities:	Reported from at least 6 localities in this region.
Photo: © J.Ralph. Magnesite from Boulby Mine, Loftus, North Yorkshire, England, UK
Magnetite
Formula:	Fe2+Fe3+2O4
Localities:	Reported from at least 54 localities in this region.
Photo: © Paul De Bondt. Magnetite from Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK
Magnetite var: Titaniferous Magnetite
Formula:	Fe2+(Fe3+,Ti)2O4
Locality:	Derbyshire, England, UK
Malachite
Formula:	Cu2(CO3)(OH)2
Localities:	Reported from at least 266 localities in this region.
Photo: © Steve Rust. Malachite from Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Malayaite
Formula:	CaSn(SiO4)O
Localities:	Red-a-Ven Mine, Okehampton area (Northern Dartmoor), Devon, England, UK Meldon Mine (Red-a-Ven Mine; Okehampton Wheal Maria; Devon Copper Mine), Okehampton area (Northern Dartmoor), Devon, England, UK Crowns Rock, Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: © 2010, JGW. Malayaite from Meldon Mine, Okehampton area, Devon, England, UK
Malhmoodite
Formula:	FeZr(PO4)2 · 4H2O
Locality:	Kerriack Cove, Portreath, St Agnes District, Cornwall, England, UK
Photo: © Leon Hupperichs. Malhmoodite from Kerriack Cove, Portreath, St Agnes District, Cornwall, England, UK
'Manganese Oxides'
Localities:	Reported from at least 10 localities in this region.
Photo: © Ian Jones. Manganese Oxides from Tremore Quarry, Lanivet, St Austell District, Cornwall, England, UK
'Manganese Oxides var: Manganese Dendrites'
Locality:	Kelton Fell Mine, Kirkland, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Lloyd Llewellyn. Manganese Dendrites from Kelton Fell Mine, Kirkland, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Manganite
Formula:	Mn3+O(OH)
Localities:	Reported from at least 25 localities in this region.
Photo: © . Manganite from Bigrigg, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Manganosite
Formula:	MnO
Locality:	Scanniclift Manganese Mine, Doddiscombsleigh, Dartmoor & Teign Valley District, Devon, England, UK
Photo: © Bernie Millington. Manganosite from Scanniclift Manganese Mine, Doddiscombsleigh, Dartmoor & Teign Valley District, Devon, England, UK
Mansfieldite
Formula:	AlAsO4 · 2H2O
Locality:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Marcasite
Formula:	FeS2
Localities:	Reported from at least 83 localities in this region.
Photo: © Steve Rust. Marcasite from Abbots Cliff, Folkestone, Shepway, Kent, England, UK
Marcasite var: Lonchidite
Formula:	Fe(S,As)2
Localities:	South Crofty Mine (South Wheal Crofty), Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Cook's Kitchen Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Tincroft Mine, Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Marialite
Formula:	Na4Al3Si9O24Cl
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Mascagnite
Formula:	(NH4)2SO4
Locality:	Bradley, Staffordshire, England, UK
Massicot
Formula:	PbO
Locality:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Matlockite (TL)
Formula:	PbFCl
Type Locality:	Cromford, Derbyshire, England, UK
Reference:	Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Vol. 2, 60
Localities:	Recorded from at least 3 other localities in this region.
Photo: © Van King. Matlockite from Cromford, Derbyshire, England, UK
Mattheddleite
Formula:	Pb5(SiO4)1.5(SO4)1.5(Cl,OH)
Localities:	Reported from at least 10 localities in this region.
Photo: © Rick Turner, 2004. Mattheddleite from Red Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Maucherite
Formula:	Ni11As8
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Mawbyite
Formula:	Pb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
Locality:	Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Mawsonite
Formula:	Cu6Fe2SnS8
Localities:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Melanotekite
Formula:	Pb2Fe3+2(Si2O7)O2
Localities:	Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK Coombe Farm Quarry, Henbury, Bristol, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK Colemans Quarry, Holwell, Somerset, England, UK ? (more information)
Photo: © NHM, 2006. Melanotekite from Torr Works Quarry, Cranmore, Somerset, England, UK
Melanterite
Formula:	FeSO4 · 7H2O
Localities:	Reported from at least 27 localities in this region.
Photo: © Colleen Thomson. Melanterite from Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire, England, UK
'Melilite'
Locality:	The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK
Mendipite (TL)
Formula:	Pb3Cl2O2
Type Locality:	Churchill, Mendip Hills, Somerset, England, UK
Reference:	Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 57.
Localities:	Recorded from at least 5 other localities in this region.
Photo: © Peter Haas. Mendipite from Torr Works Quarry, Cranmore, Somerset, England, UK
Meneghinite
Formula:	Pb13CuSb7S24
Localities:	Pengenna Mine, St Kew, Wadebridge District, Cornwall, England, UK Polzeath, St Minver, Wadebridge District, Cornwall, England, UK Port Quin Mine, Port Quin, St Minver, Wadebridge District, Cornwall, England, UK Emily Mine, Wembury, Tavistock District, Devon, England, UK
Mercury
Formula:	Hg
Locality:	Rutland Cave Mine (Rutland Mine; Nestus Mine), Heights of Abraham, Matlock Bath, Derbyshire, England, UK
Photo: Mercury from Rutland Cave Mine, Heights of Abraham, Matlock Bath, Derbyshire, England, UK
Mereheadite (TL)
Formula:	Pb47Cl25(OH)13O24(CO3)(BO3)2
Type Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Habit:	massive; occasionally crude xls but these are very, very rare
Colour:	yellow orange to reddish brown
Fluorescence:	occasionally yellow-green (SW) but this may be due to impurities
Description:	Originally from manganese-rich pods along 'Vein 2' and from loose blocks believed to have been derived from 'Vein 1'. Recently found in manganese pods on benches F and G in 2005 and 2006 respectively.
Reference:	[Min.Mag.(1998) 62, 387-393; J. Russel Soc 2:2 p29]; Turner, R.W., (2005) A New Find of Lead Oxychlorides at Torr Works, Somerset. Russell Society Newsletter, No. 47, September 2005; Turner, R.W., (2006) A Mechanism for the formation of the Mineralised Mn Deposits at Merehead Quarry, Cranmore, Somerset, England. Min. Mag. vol. 70, no. 6, pp 629 - 653; Krivovichev, S.V., Turner, R.W., Rumsey, M.S., Siidra, O.I. and Kirk, C.A. (2009). The crystal structure and chemistry of mereheadite. Mineralogical Magazine, 73, 75-89; Turner, R.W. and Rumsey, M.S. (2010): Mineral Relationships in the Mendip Hills. Journal of the Russell Society, vol 13, pp 3-46;
Localities:	Recorded from at least 1 other locality in this region.
Photo: © Ian Jones. Mereheadite from Torr Works Quarry, Cranmore, Somerset, England, UK
Mertieite-II
Formula:	Pd8(Sb,As)3
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Mesolite
Formula:	Na2Ca2Si9Al6O30 · 8H2O
Localities:	Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Pouk Hill Quarry (Pouck Hill Quarry), Bentley, Staffordshire, England, UK Botallack Head (Wheal Cock Carn), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK ? (more information) Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK (more information)
'Meta-autunite Group'
Formula:	A(UO2)2(XO4)2·nH2O (n = 6, 7 or 8)
Locality:	Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Metanováčekite
Formula:	Mg(UO2)2(AsO4)2 · 4-8H2O
Locality:	West Wheal Owles (Cargodna Mine), Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Metasaléeite
Formula:	Mg(UO2)2(PO4)2 · 8H2O
Localities:	South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Photo: © Ian Jones. Metasaléeite from Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Metasideronatrite
Formula:	Na2Fe(SO4)2(OH) · H2O
Locality:	Barton-on-Sea, Milton, Hampshire, England, UK
Metatorbernite (TL)
Formula:	Cu(UO2)2(PO4)2 · 8H2O
Type Locality:	Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Arthur Francis Hallimond, 1916, Crystallography and Dehydration of Torbernite, Mineralogical Magazine, 17, p. 326-339.
Localities:	Recorded from at least 12 other localities in this region.
Photo: © Peter Haas. Metatorbernite from Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Metatyuyamunite
Formula:	Ca(UO2)2(VO4)2 · 3-5H2O
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Metavoltine
Formula:	Na6K2FeFe6(SO4)12O2 · 18H2O
Localities:	Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Brigham Quarry, Cockermouth, North and Western Region (Cumberland), Cumbria, England, UK
Metazeunerite
Formula:	Cu(UO2)2(AsO4)2 · 8H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © Steve Rust. Metazeunerite from Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
'Mica Group'
Localities:	Reported from at least 6 localities in this region.
Photo: © Richard De Nul. Mica Group from Darley Ford Quarry, Darley, Linkinhorne, Liskeard District, Cornwall, England, UK
Microcline
Formula:	KAlSi3O8
Localities:	Reported from at least 8 localities in this region.
Microlite Group
Localities:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Milarite
Formula:	K2Ca4Al2Be4Si24O60 · H2O
Localities:	Cheesewring Quarry, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Photo: © D.Green. Milarite from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Millerite
Formula:	NiS
Localities:	Reported from at least 26 localities in this region.
Photo: © Steve Rust. Millerite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Mimetite
Formula:	Pb5(AsO4)3Cl
Localities:	Reported from at least 56 localities in this region.
Photo: © 2008 Michael C. Roarke. Mimetite from Dry Gill Mine, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Mimetite var: Campylite
Localities:	Mexico Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Dry Gill Mine, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © 2002 John H. Betts. Campylite from Dry Gill Mine, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Minium
Formula:	Pb3O4
Localities:	Reported from at least 8 localities in this region.
Minnesotaite
Formula:	(Fe,Mg)3(Si4O10)(OH)2
Locality:	Lizard Peninsula, Cornwall, England, UK
Mirabilite
Formula:	Na2SO4 · 10H2O
Locality:	Kirkby Thore, Vale of Eden, South Eastern Region (Westmorland), Cumbria, England, UK
Mitridatite
Formula:	Ca2Fe3+3(PO4)3O2 · 3H2O
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Mixite
Formula:	BiCu6(AsO4)3(OH)6 · 3H2O
Localities:	Reported from at least 11 localities in this region.
Photo: © Steve Rust. Mixite from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Mogánite
Formula:	SiO2
Localities:	Lulworth Cove, Dorset, England, UK Ashford Black Marble mines, Ashford-in-the-Water, Derbyshire, England, UK Worbarrow Tout, Worbarrow Bay, Dorset, England, UK
Molybdenite
Formula:	MoS2
Localities:	Reported from at least 31 localities in this region.
Photo: © Steve Rust. Molybdenite from Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Molybdomenite
Formula:	PbSeO3
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Molybdophyllite ?
Formula:	Pb8Mg9[Si10O28(OH)8|O2|(CO3)3] · H2O
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK - erroneously reported
'Monazite'
Localities:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Craddock Moor Mine, Craddock Moor, St Cleer, Liskeard District, Cornwall, England, UK Wheal Charlotte, Charlotte United Mines, Perranuthnoe, Mount's Bay District, Cornwall, England, UK Central Mine, Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Photo: © Steve Rust. Monazite from Lanterdan Quarry, Treknow, Tintagel, Wadebridge District, Cornwall, England, UK
Monazite-(Ce)
Formula:	(Ce,La,Nd,Th)(PO4)
Localities:	Reported from at least 7 localities in this region.
Photo: © Steve Rust. Monazite-(Ce) from Croft Gothal Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Monazite-(La)
Formula:	(La,Ce,Nd)(PO4)
Locality:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Montebrasite
Formula:	LiAl(PO4)(OH)
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Montmorillonite
Formula:	(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Localities:	Reported from at least 12 localities in this region.
Montroseite
Formula:	(V3+,Fe3+)O(OH)
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Morenosite
Formula:	NiSO4 · 7H2O
Locality:	Clayton Mine, Ecton, Staffordshire, England, UK
Morinite
Formula:	NaCa2Al2(PO4)2(OH)F4 · 2H2O
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Mottramite (TL)
Formula:	PbCu(VO4)(OH)
Type Locality:	Mottram St Andrew, Cheshire, England, UK
Reference:	J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. IV (2000)
Localities:	Recorded from at least 18 other localities in this region.
Photo: © J.Ralph 2008. Mottramite from Grangers shaft, Mottram St Andrew, Cheshire, England, UK
'Mountain Leather'
Locality:	Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Mpororoite
Formula:	WAlO3(OH)3 · 2(H2O)
Locality:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Muscovite
Formula:	KAl2(AlSi3O10)(OH)2
Localities:	Reported from at least 36 localities in this region.
Photo: © P N Min.. Muscovite from Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Muscovite var: Gilbertite
Localities:	Reported from at least 15 localities in this region.
Photo: © J.J. Evans. Gilbertite from St Austell District, Cornwall, England, UK
Muscovite var: Pig's Egg
Localities:	Wheal Remfry (Wheal Remfrey) China Clay Pit, Fraddon, St Enoder, St Austell District, Cornwall, England, UK Balleswidden Mine, St Just, St Just District, Cornwall, England, UK
Photo: © J.Ralph. Pig's Egg from North Goonbarrow China Clay Pit, Bugle, Treverbyn, St Austell District, Cornwall, England, UK
Muscovite var: Sericite
Localities:	Reported from at least 8 localities in this region.
Nacrite
Formula:	Al2(Si2O5)(OH)4
Localities:	Shap Blue Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK Hope's Nose, Torquay, South Devon, Devon, England, UK Sheet Hedges Wood Quarry, Newtown Linford, Leicestershire, England, UK
Nadorite
Formula:	PbSbClO2
Localities:	Bodannon Mine, Trewetha, St Endellion, Wadebridge District, Cornwall, England, UK Trevinnick Mine, St Kew, Wadebridge District, Cornwall, England, UK Treore Mine, St Endellion, Wadebridge District, Cornwall, England, UK Wheal Leigh (Wheal Lee; Wheal Lea; Leigh Durant Mine), Pillaton, Callington District, Cornwall, England, UK Port Quin Mine, Port Quin, St Minver, Wadebridge District, Cornwall, England, UK
Namibite
Formula:	Cu(BiO)2(VO4)(OH)
Locality:	Buckbarrow Beck Veins, Waberthwaite, Southern Fells, North and Western Region (Cumberland), Cumbria, England, UK
Namuwite
Formula:	(Zn,Cu)4(SO4)(OH)6 · 4H2O
Localities:	Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Eagle Crag Mine, Patterdale, Ullswater, South Eastern Region (Westmorland), Cumbria, England, UK
Photo: © Steve Rust. Namuwite from Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Nantokite
Formula:	CuCl
Locality:	Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK
Nasonite
Formula:	Pb6Ca4(Si2O7)3Cl2
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Photo: © NHM, 2006. Nasonite from Torr Works Quarry, Cranmore, Somerset, England, UK
Natanite
Formula:	Fe2+[Sn(OH)6]
Localities:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK
Photo: © Rick Turner, 2005. Natanite from Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Natrojarosite
Formula:	NaFe3(SO4)2(OH)6
Localities:	Reported from at least 11 localities in this region.
Natrolite
Formula:	Na2Al2Si3O10 · 2H2O
Localities:	Reported from at least 12 localities in this region.
Photo: © . Natrolite from Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK
'Natromontebrasite'
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Natron
Formula:	Na2CO3 · 10H2O
Locality:	Botallack, St Just, St Just District, Cornwall, England, UK
Natrozippeite
Formula:	Na5(UO2)8(SO4)4O5(OH)3 · 12H2O
Locality:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
Photo: © Richard De Nul. Natrozippeite from Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Naumannite
Formula:	Ag2Se
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Neotocite
Formula:	(Mn,Fe,Mg)SiO3 · H2O
Localities:	Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
Nepheline
Formula:	(Na,K)AlSiO4
Locality:	Wolf Rock, Sennen, St Just District, Cornwall, England, UK
Nickeline
Formula:	NiAs
Localities:	Reported from at least 15 localities in this region.
Nickelskutterudite
Formula:	NiAs2-3
Localities:	Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Pengelly Mine (Pengelley Mine), St Ewe, St Austell District, Cornwall, England, UK
Photo: © Paul De Bondt. Nickelskutterudite from Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Nickelskutterudite var: Chloanthite
Formula:	NiAs2 - excess As up to As2.5
Localities:	Buckfastleigh, Dartmoor & Teign Valley District, Devon, England, UK Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Nontronite
Formula:	Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Localities:	Carclaze Old Tin Pit, Carclaze China Clay Pit (Baal China Clay Pit), Carluddon, Treverbyn, St Austell District, Cornwall, England, UK Carn Grey, Breage, Mount's Bay District, Cornwall, England, UK Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Nordstrandite
Formula:	Al(OH)3
Locality:	Newhaven, East Sussex, England, UK
Nosean
Formula:	Na8(Al6Si6O24)(SO4)
Locality:	Wolf Rock, Sennen, St Just District, Cornwall, England, UK
Nováčekite-I
Formula:	Mg(UO2)2(AsO4)2 · 12H2O
Locality:	Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
'Ochre'
Localities:	Reported from at least 12 localities in this region.
Olivenite (TL)
Formula:	Cu2(AsO4)(OH)
Type Locality:	Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Localities:	Recorded from at least 40 other localities in this region.
Photo: © Steve Rust. Olivenite from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Olivenite var: Leucochalcite
Locality:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Photo: © Steve Rust. Leucochalcite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Olivenite var: Wood Copper
Locality:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: © J.Ralph 2004. Wood Copper from Wheal Gorland, St Day United Mines, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
'Olivine'
Formula:	(Mg,Fe2+)2SiO4
Localities:	Barwell meteorite, Barwell, Leicestershire, England, UK Calton Hill Quarry, Blackwell-in-the-Peak, Derbyshire, England, UK
Olsacherite
Formula:	Pb2(SeO4)(SO4)
Locality:	Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Photo: © Steve Rust. Olsacherite from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Opal
Formula:	SiO2 · nH2O
Localities:	Reported from at least 36 localities in this region.
Photo: Opal from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Opal var: Fire Opal
Localities:	Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Carne (Wheal Maitland; Wheal London), Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: © . Fire Opal from Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Opal var: Hydrophane
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Opal var: Isopyre
Localities:	Wheal Carne (Wheal Maitland; Wheal London), Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK St Ives Consols (incl. Wellesley Mine; Wheal Mary), St Ives, St Ives District, Cornwall, England, UK ? (more information)
Opal var: Opal-Jasper
Locality:	Breage, Mount's Bay District, Cornwall, England, UK
Orpiment
Formula:	As2S3
Localities:	Perranarworthal, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK Burraton Coombe Quarry, St Stephens-by-Saltash, Saltash, Callington District, Cornwall, England, UK
Orthoclase
Formula:	KAlSi3O8
Localities:	Reported from at least 63 localities in this region.
Photo: © Ian Jones. Orthoclase from Halvasso Quarry, Longdowns, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK
Osarizawaite
Formula:	Pb(Al,Cu)3(SO4)2(OH)6
Locality:	Alderley Edge, Cheshire, England, UK
Otavite
Formula:	CdCO3
Locality:	Coldstones Quarry, Greenhow, Pateley Bridge District, North Pennines, North Yorkshire, England, UK
Oxyplumboroméite
Formula:	Pb2Sb2O6O
Localities:	Reported from at least 24 localities in this region.
Photo: © Rob Lavinsky. Oxyplumboroméite from St Endellion, Wadebridge District, Cornwall, England, UK
'Ozocerite'
Locality:	Urpeth Colliery, Chester-le-Street, Durham Coalfield, Co. Durham, England, UK
Palygorskite
Formula:	(Mg,Al)5(Si,Al)8O20(OH)2 · 8H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © Steve Rust. Palygorskite from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Para-alumohydrocalcite
Formula:	CaAl2(CO3)2(OH)4 · 6H2O
Locality:	Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire (Bristol; Avon), England, UK
Paracostibite ?
Formula:	CoSbS
Locality:	Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK - erroneously reported
Paragonite
Formula:	NaAl2(AlSi3O10)(OH)2
Locality:	Great Rocks Dale, Wormhill, Derbyshire, England, UK
Parahopeite
Formula:	Zn3(PO4)2 · 4H2O
Localities:	Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Turf Pits Mine, Grassington Moor, Grassington, Wharfedale, North Pennines, North Yorkshire, England, UK
Paralaurionite
Formula:	PbCl(OH)
Localities:	Reported from at least 6 localities in this region.
Photo: © Ian Jones. Paralaurionite from Torr Works Quarry, Cranmore, Somerset, England, UK
Paramelaconite
Formula:	Cu2Cu2O3
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Paramontroseite
Formula:	V4+O2
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Pararammelsbergite
Formula:	NiAs2
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Parasymplesite
Formula:	Fe2+3(AsO4)2 · 8H2O
Locality:	Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Paratacamite
Formula:	Cu3(Cu,Zn)(OH)6Cl2
Localities:	Reported from at least 13 localities in this region.
Photo: © Steve Rust. Paratacamite from Wheal Hazard, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Pargasite
Formula:	{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Localities:	Kildown Point, Ruan Minor, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Parkerite
Formula:	Ni3Bi2S2
Locality:	North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Parkinsonite (TL)
Formula:	(Pb,Mo,◻)8O8Cl2
Type Locality:	Wesley Mine, Westbury on Trym, Bristol, England, UK
Reference:	BMS Database; Min.Mag.: 58:59-68 (1994).
Localities:	Recorded from at least 1 other locality in this region.
Photo: © Ian Jones. Parkinsonite from Torr Works Quarry, Cranmore, Somerset, England, UK
Parnauite
Formula:	Cu9(AsO4)2(SO4)(OH)10 · 7H2O
Localities:	Reported from at least 10 localities in this region.
Photo: © Steve Rust. Parnauite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Pascoite
Formula:	Ca3(V10O28) · 17H2O
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Pectolite
Formula:	NaCa2(HSi3O9)
Localities:	Reported from at least 11 localities in this region.
Photo: © Jorge M. Alves. Pectolite from High Force Quarry, Forest-in-Teesdale, Teesdale, North Pennines, Co. Durham, England, UK
Penfieldite
Formula:	Pb2Cl3(OH)
Locality:	The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK
Penroseite
Formula:	(Ni,Co,Cu)Se2
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Pentlandite
Formula:	(Fe,Ni)9S8
Locality:	Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Petalite
Formula:	LiAl(Si4O10)
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Petitjeanite
Formula:	Bi3(PO4)2O(OH)
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
'Petroleum'
Localities:	Reported from at least 8 localities in this region.
Pharmacolite
Formula:	Ca(HAsO4) · 2H2O
Locality:	Wanthwaite Mine, St John's in the Vale, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
Pharmacosiderite (TL)
Formula:	KFe3+4(AsO4)3(OH)4 · 6-7H2O
Type Locality:	Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 63; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Localities:	Recorded from at least 50 other localities in this region.
Photo: © De Nul, Richard. Pharmacosiderite from Hemerdon Mine, Plympton, Tavistock District, Devon, England, UK
Phaunouxite
Formula:	Ca3(AsO4)2 · 11H2O
Locality:	Nether Row Brow, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Phenakite
Formula:	Be2SiO4
Localities:	Reported from at least 11 localities in this region.
Photo: © Rory Donaldson. Phenakite from Cheesewring Quarry, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Philipsbornite
Formula:	PbAl3(AsO4)2(OH)5 · H2O
Locality:	Wheal Unity, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Philipsburgite
Formula:	(Cu,Zn)6(AsO4,PO4)2(OH)6 · H2O
Localities:	Reported from at least 8 localities in this region.
Photo: © Steve Rust. Philipsburgite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Phlogopite
Formula:	KMg3(AlSi3O10)(OH,F)2
Localities:	Castle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, St Austell District, Cornwall, England, UK Pendennis, Falmouth, Helford - Falmouth Area, Wendron & Falmouth District, Cornwall, England, UK
Phosgenite
Formula:	Pb2CO3Cl2
Localities:	Reported from at least 21 localities in this region.
Photo: © . Phosgenite from The Gannel Smelter, Crantock, St Agnes District, Cornwall, England, UK
Phosphohedyphane
Formula:	Ca2Pb3(PO4)3Cl
Localities:	Whitwell Quarry, Whitwell, Derbyshire, England, UK Wheal Mary Ann, Menheniot, Liskeard District, Cornwall, England, UK Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Photo: Phosphohedyphane from Wheal Mary Ann, Menheniot, Liskeard District, Cornwall, England, UK
Phosphosiderite
Formula:	FePO4 · 2H2O
Locality:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
Photo: © De Nul, Richard. Phosphosiderite from Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, St Agnes District, Cornwall, England, UK
Phosphuranylite ?
Formula:	(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Locality:	Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK - erroneously reported
Phurcalite
Formula:	Ca2(UO2)3(PO4)2O2 · 7H2O
Locality:	Merrivale Quarry, Whitchurch, Tavistock District, Devon, England, UK
Photo: © Van King. Phurcalite from Merrivale Quarry, Whitchurch, Tavistock District, Devon, England, UK
Picropharmacolite
Formula:	Ca4Mg(AsO4)2(HAsO4)2 · 11H2O
Locality:	Wanthwaite Mine, St John's in the Vale, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
Pigeonite
Formula:	(Mg,Fe2+,Ca)(Mg,Fe2+)Si2O6
Locality:	Dinas Head, St Merryn, Wadebridge District, Cornwall, England, UK
'Pigotite'
Formula:	Al4C6H5O10 · 13H2O (?)
Localities:	Cripp's Cove, Treen, St Levan, St Just District, Cornwall, England, UK Piper's Hole, Tresco, Isles of Scilly, Cornwall, England, UK
'Pilolite'
Formula:	Mg4Al2Si10O27 · 15H2O
Localities:	Seaton, East Devon, Devon, England, UK Bardon Hill Quarry, Bardon, Leicestershire, England, UK
Photo: © Rob Lavinsky. Pilolite from Seaton, East Devon, Devon, England, UK
'Pinite'
Localities:	Reported from at least 8 localities in this region.
'Pitticite'
Formula:	(Fe, SO4, AsO4, H2O) ?
Localities:	Wheal Sparnon, Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Dolcoath Mine, Tuckingmill, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Brandy Gill Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Plagionite
Formula:	Pb5Sb8S17
Locality:	Bounds Cliff, St Endellion, Wadebridge District, Cornwall, England, UK
Plancheite
Formula:	Cu8(Si8O22)(OH)4 · H2O
Localities:	Engine Vein Mine, Alderley Edge, Cheshire, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK ? (more information) Driggith Mine (Driggeth Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK ? (more information)
'Planerite-Turquoise Series'
Locality:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Platinum
Formula:	Pt
Localities:	Manaccan, Lizard Peninsula, Cornwall, England, UK Kynance Cove, Landewednack, Lizard Peninsula, Cornwall, England, UK
Plattnerite
Formula:	PbO2
Localities:	Higher Pitts Mine, Priddy, Mendip Hills, Somerset, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK ? (more information)
'Plumbago'
Locality:	Wheal Trevillick, Creed, St Austell District, Cornwall, England, UK
'Plumbic Ochre'
Locality:	Wheal Penrose, Porthleven, Mount's Bay District, Cornwall, England, UK
Plumbogummite
Formula:	PbAl3(PO4)2(OH)5 · H2O
Localities:	Reported from at least 20 localities in this region.
Photo: © Peter Haas. Plumbogummite from Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Plumbojarosite
Formula:	Pb0.5Fe3+3(SO4)2(OH)6
Localities:	Reported from at least 12 localities in this region.
Plumbonacrite (TL)
Formula:	Pb5O(OH)2(CO3)3
Type Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Habit:	Pale yellow, hexagonal bipyramidal crystals.
Colour:	pale yellow, white
Description:	Although not accepted by the IMA as a valid mineral species, crystals of 'plumbonacrite' to around 2mm, and aggregates of xx to around 5mm have been found at Merehead in association with rickturnerite and mereheadite.
Reference:	Turner, R.W. and Rumsey, M.S. (2010): Mineral Relationships in the Mendip Hills. Journal of the Russell Society, vol 13, pp 3-46. ; CNMNC Newsletter No. 14, October 2012, page 1282; Mineralogical Magazine, 76, 1281-1288 [revalidation]
Photo: © Rick Turner, 2010. Plumbonacrite from Torr Works Quarry, Cranmore, Somerset, England, UK
'Plumosite'
Locality:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK
Pollucite
Formula:	(Cs,Na)2(Al2Si4O12) · 2H2O
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Polybasite
Formula:	[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Locality:	Polzeath, St Minver, Wadebridge District, Cornwall, England, UK
Polybasite-Tac
Locality:	Polzeath, St Minver, Wadebridge District, Cornwall, England, UK
Polyhalite
Formula:	K2Ca2Mg(SO4)4 · 2H2O
Localities:	Rough Gas Field, Block 47/3, Offshore, Humberside, England, UK Eskdale No. 2 borehole (Aislaby), Eskdale, North Yorkshire, England, UK Boulby Mine, Loftus, North Yorkshire, England, UK Eskdale No. 3 borehole (Sleights), Eskdale, North Yorkshire, England, UK Eskdale No. 6 borehole (Upgang), Eskdale, North Yorkshire, England, UK
Posnjakite
Formula:	Cu4(SO4)(OH)6 · H2O
Localities:	Reported from at least 13 localities in this region.
Photo: © Steve Rust. Posnjakite from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
'Potassic-magnesio-arfvedsonite'
Formula:	[K][Na2][Mg4Fe3+]Si8O22(OH)2
Locality:	Pendennis, Falmouth, Helford - Falmouth Area, Wendron & Falmouth District, Cornwall, England, UK
Powellite
Formula:	Ca(MoO4)
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Prehnite
Formula:	Ca2Al2Si3O10(OH)2
Localities:	Reported from at least 23 localities in this region.
Photo: Prehnite from Pentire Cliffs, Polzeath, St Minver, Wadebridge District, Cornwall, England, UK
Preisingerite
Formula:	Bi3(AsO4)2O(OH)
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Priceite
Formula:	Ca2B5O7(OH)5 · H2O
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Prosopite
Formula:	CaAl2(F,OH)8
Locality:	Coldstones Quarry, Greenhow, Pateley Bridge District, North Pennines, North Yorkshire, England, UK
'Protopartzite'
Formula:	(Sb, Cu, Fe, As)
Locality:	Blagill Mine, Nent Valley, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Pseudoboleite
Formula:	Pb31Cu24Cl62(OH)48
Localities:	Tolcarne Beach, Newquay, St Agnes District, Cornwall, England, UK The Gannel Smelter (slag locality), Crantock, St Agnes District, Cornwall, England, UK
Pseudomalachite
Formula:	Cu5(PO4)2(OH)4
Localities:	Reported from at least 24 localities in this region.
Photo: Pseudomalachite from Wheal Carpenter, Fraddam, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK
'Psilomelane'
Localities:	Reported from at least 43 localities in this region.
Photo: Psilomelane from Quither Mine, Milton Abbot, Tavistock District, Devon, England, UK
Pumpellyite-(Mg)
Formula:	Ca2MgAl2(Si2O7)(SiO4)(OH)2 · H2O
Localities:	Great Penhaver Point, Roseland Peninsula, Wendron & Falmouth District, Cornwall, England, UK Penlee Quarry, Paul, Mount's Bay District, Cornwall, England, UK
Pyrargyrite
Formula:	Ag3SbS3
Localities:	Reported from at least 15 localities in this region.
Photo: © Steve Rust. Pyrargyrite from Herodsfoot Mine, Lanreath, Liskeard District, Cornwall, England, UK
Pyrite
Formula:	FeS2
Localities:	Reported from at least 574 localities in this region.
Photo: © J.Ralph. Pyrite from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Pyrite var: Bravoite
Formula:	(Fe,Ni)S2
Localities:	Reported from at least 11 localities in this region.
'Pyrobitumen'
Locality:	Gregory Mine, Overton Hall, Ashover, Derbyshire, England, UK
Photo: © . Pyrobitumen from Gregory Mine, Overton Hall, Ashover, Derbyshire, England, UK
Pyrochlore Group
Formula:	A2Nb2(O,OH)6Z
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Pyrochroite
Formula:	Mn(OH)2
Locality:	Scanniclift Manganese Mine, Doddiscombsleigh, Dartmoor & Teign Valley District, Devon, England, UK
Pyrolusite
Formula:	MnO2
Localities:	Reported from at least 49 localities in this region.
Photo: © Steve Rust. Pyrolusite from Croft Quarry, Croft, Leicestershire, England, UK
Pyromorphite
Formula:	Pb5(PO4)3Cl
Localities:	Reported from at least 119 localities in this region.
Photo: © Rob Lavinsky. Pyromorphite from Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
'Pyromorphite Subgroup'
Localities:	Reported from at least 7 localities in this region.
Pyrophyllite
Formula:	Al2(Si4O10)(OH)2
Localities:	Lizard Peninsula, Cornwall, England, UK Aik Beck, Barton, Eamont Valley, Cumbria, England, UK
'Pyrosmalite'
Locality:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK
Pyrostilpnite
Formula:	Ag3SbS3
Localities:	St Teath, Wadebridge District, Cornwall, England, UK Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Liskeard District, Cornwall, England, UK
'Pyroxene Group'
Locality:	Botallack Head (Wheal Cock Carn), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Pyrrhotite
Formula:	Fe1-xS (x = 0 to 0.17)
Localities:	Reported from at least 46 localities in this region.
Photo: © Wright's Rock Shop. Pyrrhotite from Cambokeels Mine, Westgate, Weardale, North Pennines, Co. Durham, England, UK
Qitianlingite
Formula:	(Fe,Mn)2(Nb,Ta)2WO10
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Quartz
Formula:	SiO2
Localities:	Reported from at least 688 localities in this region.
Photo: © De Nul, Richard. Quartz from Wheal Mary Ann, Menheniot, Liskeard District, Cornwall, England, UK
Quartz var: Agate
Formula:	SiO2
Localities:	Reported from at least 19 localities in this region.
Photo: © Bernie Millington. Agate from Walkham and Poldice Mine, Buckland Monachorum, Tavistock District, Devon, England, UK
Quartz var: Amethyst
Formula:	SiO2
Localities:	Reported from at least 49 localities in this region.
Photo: © J.Ralph. Amethyst from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Quartz var: Babel-Quartz
Locality:	Bere Alston (Beeralstone; incl. Bere Alston Mines; Old Beer Mines; Tamar Silver-Lead Mines), Bere Ferrers (Beer Ferris), Tavistock District, Devon, England, UK
Photo: Babel-Quartz from Bere Alston, Bere Ferrers, Tavistock District, Devon, England, UK
Quartz var: Beekite
Localities:	Reported from at least 6 localities in this region.
Quartz var: Capped Quartz
Locality:	Virtuous Lady Mine, Buckland Monachorum, Tavistock District, Devon, England, UK
Photo: Capped Quartz from Virtuous Lady Mine, Buckland Monachorum, Tavistock District, Devon, England, UK
Quartz var: Carnelian
Localities:	Wheal Cock, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Loe Bar, Porthleven, Mount's Bay District, Cornwall, England, UK
Quartz var: Chalcedony
Localities:	Reported from at least 66 localities in this region.
Photo: © Bill Gordon. Chalcedony from Wheal Mary Ann, Menheniot, Liskeard District, Cornwall, England, UK
Quartz var: Citrine
Localities:	Reported from at least 8 localities in this region.
Quartz var: Eisenkiesel
Localities:	Mount Wellington Mine (Wheal Magpie), Cusgarne, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Florence Mine, Egremont, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Ligger Bay, Perranporth, Perranzabuloe, St Agnes District, Cornwall, England, UK
Quartz var: Ferruginous Quartz
Localities:	North and Western Region (Cumberland), Cumbria, England, UK Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Kernick, Treviscoe, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Photo: Ferruginous Quartz from Wheal Kernick, Treviscoe, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Quartz var: Haytorite
Localities:	Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK North Roskear Mine, North Roskear, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: © Weinrich Minerals, Inc.. Haytorite from Haytor Mine, Ilsington, Dartmoor & Teign Valley District, Devon, England, UK
Quartz var: Jasper
Localities:	Reported from at least 31 localities in this region.
Photo: © Bernie Millington. Jasper from Scanniclift Manganese Mine, Doddiscombsleigh, Dartmoor & Teign Valley District, Devon, England, UK
Quartz var: Milky Quartz
Localities:	Great Wheal Fortune, Breage, Mount's Bay District, Cornwall, England, UK Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK South Crofty Mine (South Wheal Crofty), Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Madron, St Just District, Cornwall, England, UK Wheal Bray, Altarnun, Wadebridge District, Cornwall, England, UK
Photo: © HW. Milky Quartz from Burtree Pasture Mine, Cowshill, Weardale, North Pennines, Co. Durham, England, UK
Quartz var: Prase
Localities:	North Roskear Mine, North Roskear, Camborne, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Bellan (Wheal Bellon), Cot Valley, St Just, St Just District, Cornwall, England, UK
Quartz var: Prasiolite
Locality:	Banwell Hill, Banwell, Somerset, England, UK
Quartz var: Rock Crystal
Localities:	Reported from at least 43 localities in this region.
Photo: © DRC. Rock Crystal from Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Quartz var: Rose Quartz
Localities:	St Michael's Mount, Marazion, Mount's Bay District, Cornwall, England, UK Buckett's Mine (Wheal Buckets; incl. East Wheal Uny), Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK Calton Hill Quarry, Blackwell-in-the-Peak, Derbyshire, England, UK
Photo: © Bernie Millington. Rose Quartz from Nun's Cross, Dartmoor Forest, Dartmoor & Teign Valley District, Devon, England, UK
Quartz var: Smoky Quartz
Formula:	SiO2
Localities:	Reported from at least 28 localities in this region.
Photo: © 2002 John H. Betts. Smoky Quartz from Florence Mine, Egremont, West Cumberland Iron Field, North and Western Region, Cumbria, England, UK
Queitite
Formula:	Pb4Zn2(SO4)(SiO4)(Si2O7)
Locality:	Red Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Rammelsbergite
Formula:	NiAs2
Localities:	Reported from at least 8 localities in this region.
Ramsbeckite
Formula:	(Cu,Zn)15(SO4)4(OH)22 · 6H2O
Localities:	Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK Silver Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Driggith Mine (Driggeth Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Prince of Wales Mine (Wheal Pleasant), Harrowbarrow & Prince of Wales Mines (Calstock United Tin and Copper Mines), Calstock, Callington District, Cornwall, England, UK
Photo: © Steve Rust. Ramsbeckite from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Rauenthalite
Formula:	Ca3(AsO4)2 · 10H2O
Locality:	Ivy Tor Mine, Belstone, Okehampton area (Northern Dartmoor), Devon, England, UK
Realgar
Formula:	As4S4
Locality:	Burraton Coombe Quarry, St Stephens-by-Saltash, Saltash, Callington District, Cornwall, England, UK
Redgillite (TL)
Formula:	Cu6(SO4)(OH)10 · H2O
Type Locality:	Silver Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Reference:	Pluth, J.J., Steele, I.M., Kampf, A.R., Green, D.I. (2005): Redgillite, Cu6(OH)10(SO4)·H2O, a new mineral from Caldbeck Fells, Cumbria, England, UK: Description and crystal structure. Mineralogical Magazine, 69, 973-980
Localities:	Recorded from at least 6 other localities in this region.
Photo: © Brent Thorne. Redgillite from Driggith Mine, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Reichenbachite
Formula:	Cu5(PO4)2(OH)4
Locality:	Old Gunnislake Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Photo: © Paul De Bondt. Reichenbachite from Old Gunnislake Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Retgersite
Formula:	NiSO4 · 6H2O
Locality:	Newdigate Colliery, Bedworth, Warwickshire, England, UK
'Retinite'
Locality:	Bovey Tracey, Dartmoor & Teign Valley District, Devon, England, UK
Rhabdophane-(Ce) (TL)
Formula:	(Ce,La)(PO4) · H2O
Type Locality:	Fowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath, St Austell District, Cornwall, England, UK
Reference:	No reference listed
Rhabdophane-(Nd)
Formula:	(Nd,Ce,La)(PO4) · H2O
Localities:	Cornwall, England, UK Fowey Consols (incl. Wheal Treasure; Wheal Fortune; Wheal Chance), Tywardreath, St Austell District, Cornwall, England, UK (more information)
Photo: © J.Ralph. Rhabdophane-(Nd) from Cornwall, England, UK
Rhodizite
Formula:	(K,Cs)Al4Be4(B,Be)12O28
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Rhodochrosite
Formula:	MnCO3
Localities:	Reported from at least 25 localities in this region.
Photo: © Steve Rust. Rhodochrosite from Geevor Mine, Pendeen, St Just, St Just District, Cornwall, England, UK
Rhodonite
Formula:	MnSiO3
Localities:	Reported from at least 12 localities in this region.
Photo: © Dan & Diana Weinrich Minerals. Rhodonite from Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK
Rickturnerite (TL)
Formula:	Pb7O4[Mg(OH)4](OH)Cl3
Type Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Habit:	Generally as fibrous aggregates. Occasionally as glassy masses. Rarely as individual acicular crystals.
Colour:	White, grey, pale green.
Reference:	Mineralogical Magazine, 74, 899-902; Turner, R.W. and Rumsey, M.S. (2010): Mineral Relationships in the Mendip Hills. Journal of the Russell Society, vol 13, pp 3-46; M. S. Rumsey, S. V. Krivovichev, O. I. Siidra, C. A. Kirk, C. J. Stanley and J. Spratt (2012): Rickturnerite, Pb7O4[Mg(OH)4](OH)Cl3, a complex new lead oxychloride mineral. Mineralogical Magazine 76, 59-73.
Localities:	Recorded from at least 1 other locality in this region.
Photo: © Rick Turner, 2010. Rickturnerite from Torr Works Quarry, Cranmore, Somerset, England, UK
Riebeckite
Formula:	◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Locality:	Pendennis Dyke, Falmouth, Helford - Falmouth Area, Wendron & Falmouth District, Cornwall, England, UK
Rinneite
Formula:	K3Na[FeCl6]
Localities:	Eskdale No. 3 borehole (Sleights), Eskdale, North Yorkshire, England, UK Eskdale No. 6 borehole (Upgang), Eskdale, North Yorkshire, England, UK
Rockbridgeite
Formula:	Fe2+Fe3+4(PO4)3(OH)5
Localities:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK New East Wheal Russell (South Wheal Crebor), Tavistock Hamlets, Tavistock District, Devon, England, UK ? (more information)
Romanèchite
Formula:	(Ba,H2O)2Mn5O10
Localities:	Reported from at least 9 localities in this region.
'Roméite Group'
Locality:	Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
'Roméite Group var: Stibiconite'
Localities:	Reported from at least 12 localities in this region.
Rooseveltite
Formula:	Bi(AsO4)
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Roquesite
Formula:	CuInS2
Locality:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
Rosasite
Formula:	(Cu,Zn)2(CO3)(OH)2
Localities:	Reported from at least 23 localities in this region.
Photo: © . Rosasite from Closehouse Mine, Lunedale, North Pennines, Co. Durham, England, UK
Roscherite
Formula:	Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O
Locality:	Gunnislake Clitters Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Photo: © Richard De Nul. Roscherite from Gunnislake Clitters Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Roscoelite
Formula:	K(V3+,Al)2(AlSi3O10)(OH)2
Locality:	Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Rossmanite
Formula:	☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Locality:	Dorothy China Clay Pit, Whitemoor, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Photo: © Paul De Bondt. Rossmanite from Dorothy China Clay Pit, Whitemoor, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Rumseyite (TL)
Formula:	Pb2OClF
Type Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Reference:	Turner, R.W., Siidra, O.I., Krivovichev, S.V., Stanley, C.J. and Spratt. J. (2012) Rumseyite, IMA 2011-091. CNMNC Newsletter, 13(6), 808.
Photo: Rumseyite from Torr Works Quarry, Cranmore, Somerset, England, UK
Russellite (TL)
Formula:	Bi2WO6
Type Locality:	Castle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, St Austell District, Cornwall, England, UK
Reference:	[Clark, 1993 - "Hey's Mineral Index"]
Localities:	Recorded from at least 3 other localities in this region.
Photo: © Steve Rust. Russellite from Hemerdon Mine, Plympton, Tavistock District, Devon, England, UK
Rutherfordine
Formula:	(UO2)CO3
Localities:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Photo: © G.Curtis. Rutherfordine from South Terras Mine, St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Rutile
Formula:	TiO2
Localities:	Reported from at least 26 localities in this region.
Photo: © Steve Rust. Rutile from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Rutile var: Ilmenorutile
Formula:	Fex(Nb,Ta)2x · 4Ti1-xO2
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Rutile var: Strüverite
Formula:	(Ti,Ta,Fe)O2
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Sabugalite ?
Formula:	HAl(UO2)4(PO4)4 · 16H2O
Locality:	Kingswood Mine, Buckfastleigh, Dartmoor & Teign Valley District, Devon, England, UK - erroneously reported
Photo: © Weinrich Minerals, Inc.. Sabugalite from Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Sadanagaite
Formula:	{Na}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2
Locality:	Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Safflorite
Formula:	CoAs2
Localities:	Wheal Sparnon, Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK Coniston Copper Mines, Coniston District, South Western Region (Furness), Cumbria, England, UK Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Salammoniac
Formula:	NH4Cl
Localities:	Newcastle upon Tyne, Tyne & Wear, England, UK Bradley, Staffordshire, England, UK
Saléeite
Formula:	Mg(UO2)2(PO4)2 · 10H2O
Localities:	South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Great Roughtor Consols, Davidstow, Wadebridge District, Cornwall, England, UK
Sanidine
Formula:	KAlSi3O8
Localities:	Wolf Rock, Sennen, St Just District, Cornwall, England, UK Wasdale Head, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Saponite (TL)
Formula:	Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Type Locality:	Lizard Point, Landewednack, Lizard Peninsula, Cornwall, England, UK
Reference:	No reference listed
Localities:	Recorded from at least 5 other localities in this region.
Photo: © 2005 - MMI. Saponite from Lizard Peninsula, Cornwall, England, UK
'Saussurite'
Localities:	Cadgwith, Ruan Minor, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Coverack Cove, Coverack, St Keverne, Lizard Peninsula, Cornwall, England, UK Gwenter (Gwinter; Gwendra), St Keverne, Lizard Peninsula, Cornwall, England, UK ? (more information) Kynance Cove, Landewednack, Lizard Peninsula, Cornwall, England, UK ? (more information)
'Scapolite'
Locality:	Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Scarbroite (TL)
Formula:	Al5(CO3)(OH)13 · 5H2O
Type Locality:	South Bay, Scarborough, North Yorkshire, England, UK
Reference:	[Phil.Mag., 2nd ser.(1829) 5, 178; Nickel & Nichols, 1991, 187 - "Mineral Reference Manual"]; Mineralogical Magazine 1960 32 : 353-362.; D. M. Egan (1986) The Occurrence of Scarbroite at Muskiki Lake, Saskatchewan, Canada. Mineralogical Magazine 50:180
Localities:	Recorded from at least 2 other localities in this region.
Photo: © Thomas Witzke. Scarbroite from South Bay, Scarborough, North Yorkshire, England, UK
'Schalenblende'
Locality:	Lockridge Mine (Goldstreet Mine), East Tamar Consols, Bere Alston (Beeralstone; incl. Bere Alston Mines; Old Beer Mines; Tamar Silver-Lead Mines), Bere Ferrers (Beer Ferris), Tavistock District, Devon, England, UK
Scheelite
Formula:	Ca(WO4)
Localities:	Reported from at least 33 localities in this region.
Photo: © M.P.Cooper. Scheelite from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Schmiederite
Formula:	Pb2Cu2(Se6+O4)(Se4+O3)(OH)4
Localities:	Greystones Quarry, Lezant, Callington District, Cornwall, England, UK Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Photo: © Brent Thorne 2010. Schmiederite from Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
Schorl
Formula:	Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities:	Reported from at least 92 localities in this region.
Photo: © Ian Jones. Schorl from Woolley Farm, Bovey Tracey, Dartmoor & Teign Valley District, Devon, England, UK
Schröckingerite
Formula:	NaCa3(UO2)(CO3)3(SO4)F · 10H2O
Locality:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK
Photo: © Peter Haas. Schröckingerite from Geevor Mine, Pendeen, St Just, St Just District, Cornwall, England, UK
Schulenbergite
Formula:	(Cu,Zn)7(SO4,CO3)2(OH)10 · 3H2O
Localities:	Reported from at least 14 localities in this region.
Photo: © Steve Rust. Schulenbergite from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Schultenite
Formula:	Pb(HAsO4)
Localities:	Deer Hills Baryte Mine, Deer Hills, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Deer Hills, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Scolecite
Formula:	CaAl2Si3O10 · 3H2O
Locality:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK
Scorodite
Formula:	FeAsO4 · 2H2O
Localities:	Reported from at least 56 localities in this region.
Photo: Scorodite from Hemerdon Mine, Plympton, Tavistock District, Devon, England, UK
Scotlandite
Formula:	PbSO3
Localities:	Reported from at least 7 localities in this region.
Photo: © Brent Thorne. Scotlandite from Dry Smale Gill, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Segnitite
Formula:	PbFe3+3(AsO4)2(OH,H2O)6
Localities:	Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Higher Roughton Gill, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Steve Rust. Segnitite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Semseyite
Formula:	Pb9Sb8S21
Localities:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Emily Mine, Wembury, Tavistock District, Devon, England, UK
Photo: © Ben Grguric. Semseyite from Emily Mine, Wembury, Tavistock District, Devon, England, UK
Sénarmontite
Formula:	Sb2O3
Localities:	Reported from at least 8 localities in this region.
Photo: © Steve Rust. Sénarmontite from Port Quin Mine, Port Quin, St Minver, Wadebridge District, Cornwall, England, UK
Sepiolite
Formula:	Mg4(Si6O15)(OH)2 · 6H2O
Localities:	Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Wyche Quarries, Malvern Hills, Worcestershire, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
'Serpentine Group'
Formula:	D2[Si2O5](OH)4 + or - nH2O
Localities:	Reported from at least 18 localities in this region.
Photo: © Rob Lavinsky. Serpentine Group from Liskeard District, Cornwall, England, UK
'Serpentine Group var: Bastite'
Localities:	Kennack Cove, Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Kildown Point, Ruan Minor, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK Coverack Cove, Coverack, St Keverne, Lizard Peninsula, Cornwall, England, UK West Wheal Owles (Cargodna Mine), Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Serpierite
Formula:	Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Localities:	Reported from at least 13 localities in this region.
Photo: © Steve Rust. Serpierite from Waterbank Mine, Back of Ecton, Ecton, Staffordshire, England, UK
Shattuckite
Formula:	Cu5(Si2O6)2(OH)2
Locality:	Wheal Maid (Wheal Maiden), St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Siderite
Formula:	FeCO3
Localities:	Reported from at least 248 localities in this region.
Photo: © De Nul, Richard. Siderite from Fowey Consols, Tywardreath, St Austell District, Cornwall, England, UK
Siderite var: Mg-rich Siderite
Formula:	(Fe,Mg)CO3
Locality:	North Yorkshire, England, UK
Siderite var: Sphärosiderite
Locality:	Madron, St Just District, Cornwall, England, UK
Sideronatrite
Formula:	Na2Fe(SO4)2(OH) · 3H2O
Localities:	Trerubies Cliff, Treligga, St Teath, Wadebridge District, Cornwall, England, UK Carnelian Bay (Cornelian Bay), Scarborough, North Yorkshire, England, UK Barton-on-Sea, Milton, Hampshire, England, UK Rising Sun Colliery, Wallsend, Tyne & Wear, England, UK Hope's Nose, Torquay, South Devon, Devon, England, UK
Siegenite
Formula:	CoNi2S4 -NiCo2S4
Locality:	Wyndham Mines, Bigrigg, West Cumberland Iron Field, North and Western Region (Cumberland), Cumbria, England, UK
Sieleckiite
Formula:	Cu3Al4(PO4)2(OH)12 · 2H2O
Locality:	Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
'Silica'
Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Sillimanite
Formula:	Al2(SiO4)O
Localities:	Polkernogo, St Keverne, Lizard Peninsula, Cornwall, England, UK Cheesewring Quarry, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Pistil Ogo, Lizard Peninsula, Cornwall, England, UK
Silver
Formula:	Ag
Localities:	Reported from at least 53 localities in this region.
Photo: © Ian Acworth 2003. Silver from Wheal Brothers, East Cornwall Silver Mines, Wheal Langford, Calstock, Callington District, Cornwall, England, UK
Silver var: Antimonial Silver
Formula:	(Ag,Sb), Sb < 5%
Localities:	Wheal Brothers (Wheal Duchy), East Cornwall Silver Mines (St Vincent Great Consols; incl. Wheal Emily; Wheal Georgiana; Wheal Mercer), Wheal Langford (New Wheal Langford; Baring and Langford Mine), Calstock, Callington District, Cornwall, England, UK Wheal Herland (Old Herland Mine; Manor Mine; North Wheal Herland), Rosewarne and Herland United Mines (Rosewarne and Herland Mine; incl. Wheal Fancy; Wheal Pleasure), Copperhouse, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK
Skutterudite
Formula:	(Co,Fe,Ni)As2-3
Localities:	Reported from at least 10 localities in this region.
Skutterudite var: Smaltite
Formula:	(Co,Fe,Ni)As2
Localities:	Reported from at least 17 localities in this region.
'Smectite Group'
Formula:	A0.3D2-3[T4O10]Z2 · nH2O
Localities:	Ladys Rake Mine, Harwood, Teesdale, North Pennines, Co. Durham, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK Carn Brea Mine (incl. Tregajorran Mine), Carn Brea and Tincroft United Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK ? (more information)
Smithsonite
Formula:	ZnCO3
Localities:	Reported from at least 82 localities in this region.
Photo: © Lloyd Llewellyn. Smithsonite from Greenlaws Mine, Daddry Shield, Weardale, North Pennines, Co. Durham, England, UK
Smolianinovite
Formula:	(Co,Ni,Mg,Ca)3(Fe3+,Al)2(AsO4)4 · 11H2O
Locality:	Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
'Soapstone' ?
Locality:	Cheesewring Quarry, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK - erroneously reported
Spangolite
Formula:	Cu6Al(SO4)(OH)12Cl · 3H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © andy thompson. Spangolite from Stoneycroft Smelter, Braithwaite District, North and Western Region, Cumbria, England, UK
Spencerite
Formula:	Zn4(PO4)2(OH)2 · 3H2O
Locality:	Turf Pits Mine, Grassington Moor, Grassington, Wharfedale, North Pennines, North Yorkshire, England, UK
Spessartine
Formula:	Mn2+3Al2(SiO4)3
Localities:	Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Sphalerite
Formula:	ZnS
Localities:	Reported from at least 421 localities in this region.
Photo: © Harjo. Sphalerite from Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Spinel
Formula:	MgAl2O4
Localities:	Kenidjack Cliff, St Just, St Just District, Cornwall, England, UK Wallow Crag Quarry, Haweswater, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK
Spionkopite
Formula:	Cu39S28
Localities:	Scaleber Bridge, Settle - Malham Area, Craven District, North Pennines, North Yorkshire, England, UK New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Judkins Quarry, Nuneaton, Warwickshire, England, UK
Spodumene
Formula:	LiAlSi2O6
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Stannite (TL)
Formula:	Cu2(Fe,Zn)SnS4
Type Locality:	West Wheal Kitty (Wheal Rock), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK
Reference:	[Embrey & Symes, 1987, 51 - "Minerals of Cornwall and Devon"; Dana 6: 83.]
Localities:	Recorded from at least 26 other localities in this region.
Photo: © 2003 Thames Valley Minerals. Stannite from Wheal Jane, Baldhu, Kea, Camborne - Redruth - St Day District, Cornwall, England, UK
Stannoidite
Formula:	Cu+6Cu2+2(Fe2+,Zn)3Sn2S12
Localities:	St Michael's Mount, Marazion, Mount's Bay District, Cornwall, England, UK Cligga Mine, Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Staurolite
Formula:	(Fe2+,Mg,Zn)1.5-2Al9(SiO4)4O6(OH,O)2
Localities:	Pistil Ogo, Lizard Peninsula, Cornwall, England, UK Thurstaston Beach, Wirral, Merseyside, England, UK
Stephanite
Formula:	Ag5SbS4
Localities:	Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK Wheal Ludcott, Wrey and Ludcott United Mines, St Ive, Liskeard District, Cornwall, England, UK Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Wheal Alfred, Great Wheal Alfred (Alfred Consols), Phillack, St Erth - Gwithian Area, Cornwall, England, UK Wheal Fortune (Wheal Newton and Queen; South Harrowbarrow Mine; incl. Wheal Newton (Wheal Barnard); Wheal Queen), Harrowbarrow Mine (Harrowbeer Mine; Wheal Goodluck; East Wheal Brothers), Harrowbarrow & Prince of Wales Mines (Calstock United Tin and Copper Mines), Calstock, Callington District, Cornwall, England, UK
Sternbergite
Formula:	AgFe2S3
Locality:	Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
'Stevensite'
Formula:	(Ca,Na)xMg3-x(Si4O10)(OH)2
Localities:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK Williams Stone Quarry (Trevassack Quarry), Goonhilly Downs, Mawgan-in-Meneage, Lizard Peninsula, Cornwall, England, UK Barrasford Quarry, Barrasford, Northumberland, England, UK
Stibnite
Formula:	Sb2S3
Localities:	Reported from at least 30 localities in this region.
Photo: © Ian Acworth 2004. Stibnite from Wheal Boys, Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK
'Stilbite'
Localities:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK Chywoon Quarry, Longdowns, Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK Botallack Head (Wheal Cock Carn), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK Colcerrow Quarry (Gready Quarry), Lanlivery, St Austell District, Cornwall, England, UK Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK ? (more information)
Photo: © Ian Jones. Stilbite from Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK
Stilbite-Ca
Formula:	NaCa4[Al9Si27O72] · nH2O
Localities:	Dean Quarry, St Keverne, Lizard Peninsula, Cornwall, England, UK Parc Bean Cove, Mullion, Lizard Peninsula, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK High Force Quarry, Forest-in-Teesdale, Teesdale, North Pennines, Co. Durham, England, UK
Stilpnomelane
Formula:	(K,Ca,Na)(Fe2+,Mg,Al,Fe3+)8(Si,Al)12(O,OH)36 · nH2O
Localities:	Mullion Island, Mullion, Lizard Peninsula, Cornwall, England, UK Bonser Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Stokesite (TL)
Formula:	CaSn[Si3O9] · 2H2O
Type Locality:	Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Reference:	Hutchinson, M.A. (1900): Mineralogical Magazine 12, 274-281
Localities:	Recorded from at least 2 other localities in this region.
Stolzite
Formula:	Pb(WO4)
Localities:	Reported from at least 6 localities in this region.
Photo: © O. Dziallas. Stolzite from Poddy Gill, Carrock Fell, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Strashimirite
Formula:	Cu8(AsO4)4(OH)4 · 5H2O
Localities:	Wheal Unity, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Wheal Gorland, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Ting Tang Mine, West Clifford United Mines, Carharrack, Camborne - Redruth - St Day District, Cornwall, England, UK
Strengite
Formula:	FePO4 · 2H2O
Localities:	Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Drakewalls Mine, Drakewalls, Calstock, Callington District, Cornwall, England, UK
Photo: © Steve Rust. Strengite from Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, St Agnes District, Cornwall, England, UK
Strontianite
Formula:	SrCO3
Localities:	Reported from at least 19 localities in this region.
Photo: © Colleen Thomson. Strontianite from Hampstead Farm Quarry, Chipping Sodbury District, South Gloucestershire, England, UK
Strunzite
Formula:	Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Localities:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Perran St George Mine (Perran Great St George Mine; Great St George Mine; Perran St George United Mine), Perran St George and Droskyn Mines, Perranzabuloe, St Agnes District, Cornwall, England, UK
Photo: © De Nul, Richard. Strunzite from Gravel Hill Mine, Perran Iron Lode, Perranzabuloe, St Agnes District, Cornwall, England, UK
Sulphur
Formula:	S8
Localities:	Reported from at least 54 localities in this region.
Photo: © Steve Rust. Sulphur from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Susannite
Formula:	Pb4(CO3)2(SO4)(OH)2
Localities:	Reported from at least 8 localities in this region.
Photo: © Steve Rust. Susannite from Red Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Svanbergite
Formula:	SrAl3(PO4)(SO4)(OH)6
Locality:	Wheal Coates, St Agnes, St Agnes District, Cornwall, England, UK
Sweetite (TL)
Formula:	Zn(OH)2
Type Locality:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Habit:	Tetragonal bipyramids
Colour:	Colourless-white, creamy
Reference:	[Min.Mag.(1984) 48, 267-269; Rust, S. Seltene Mineralien aus dem Steinbruch Milltown bei Ashover LAPIS Mineralienmagazin 1994, 12, p.13-17, 58]; Ford, T., A. Sarjeant & M. Smith (1993): The minerals of the Peak district of Derbyshire. UK Jour. Mines & Minerals 13, 16-55.
Photo: © Steve Rust. Sweetite from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Switzerite
Formula:	(Mn,Fe)3(PO4)2 · 7H2O
Locality:	Burdell Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Sylvanite
Formula:	(Au,Ag)2Te4
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Sylvite
Formula:	KCl
Localities:	Boulby Mine, Loftus, North Yorkshire, England, UK Billingham anhydrite mine, Billingham, Co. Durham, England, UK Eskdale No. 3 borehole (Sleights), Eskdale, North Yorkshire, England, UK Eskdale No. 4 borehole (Sneaton), Eskdale, North Yorkshire, England, UK Eskdale No. 6 borehole (Upgang), Eskdale, North Yorkshire, England, UK
Symesite (TL)
Formula:	Pb10(SO4)O7Cl4 · H2O
Type Locality:	Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK
Habit:	massive, platy
Colour:	white, brown, yellowish, pink
Fluorescence:	none
Description:	Originally found as pink platy material from #2 vein, recent finds (2005-6) have yielded specimens that are clear, white, grey, bluish, yellow and brown in colour. Recent specimens are associated with mereheadite, to which it is related.
Reference:	Amer.Min.(2000) 85, 1526-1533; Turner, R.W. and Rumsey, M.S. (2010): Mineral Relationships in the Mendip Hills. Journal of the Russell Society, vol 13, pp 3-46; Turner, R.W., (2006) A Mechanism for the formation of the Mineralised Mn Deposits at Merehead Quarry, Cranmore, Somerset, England. Min. Mag. vol. 70, no. 6, pp 629 - 653
Photo: © Rick Turner, 2006. Symesite from Torr Works Quarry, Cranmore, Somerset, England, UK
Symplesite
Formula:	Fe2+3(AsO4)2 · 8H2O
Localities:	Sandbeds Gill Mine, Bassenthwaite, North and Western Region (Cumberland), Cumbria, England, UK Nether Row Brow, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Wanthwaite Mine, St John's in the Vale, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
Synchysite-(Ce)
Formula:	Ca(Ce,La)(CO3)2F
Localities:	Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region (Westmorland), Cumbria, England, UK North Mine (East Wheal Friendship), Devon United Mines, Peter Tavy, Tavistock District, Devon, England, UK
Photo: © R.Bell. Synchysite-(Ce) from Shap Pink Quarry, Shap, Eastern Fells, South Eastern Region, Cumbria, England, UK
Tachyhydrite
Formula:	CaMg2Cl6 · 12H2O
Locality:	Billingham anhydrite mine, Billingham, Co. Durham, England, UK
Taenite
Formula:	(Fe,Ni)
Locality:	Barwell meteorite, Barwell, Leicestershire, England, UK
Talc
Formula:	Mg3(Si4O10)(OH)2
Localities:	Reported from at least 19 localities in this region.
Photo: Talc from Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK
Talc var: Steatite
Formula:	Mg3(Si4O10)(OH)2
Localities:	Reported from at least 17 localities in this region.
Talmessite
Formula:	Ca2Mg(AsO4)2 · 2H2O
Locality:	Ivy Tor Mine, Belstone, Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © Richard De Nul. Talmessite from Ivy Tor Mine, Belstone, Okehampton area, Devon, England, UK
Tamarugite
Formula:	NaAl(SO4)2 · 6H2O
Localities:	Compton Chine, Freshwater, Isle of Wight, England, UK Billingham anhydrite mine, Billingham, Co. Durham, England, UK
Tangeite
Formula:	CaCu(VO4)(OH)
Locality:	Glen Parva, Leicester, Leicestershire, England, UK
Photo: © C.Thomson 2008. Tangeite from New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
'Tantalite'
Formula:	(Fe,Mn)(Ta,Nb)2O6
Locality:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Tantalite-(Mn)
Formula:	MnTa2O6
Locality:	Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
'Tavistockite'
Localities:	Holmbush Mine, Callington United Mines (incl. Emmens United Mines), Stoke Climsland, Callington District, Cornwall, England, UK Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Tennantite (TL)
Formula:	Cu6[Cu4(Fe,Zn)2]As4S13
Type Locality:	Cornwall, England, UK
Reference:	Phillips Quart. Jour. Sci. & Arts of Royal Institution vii, 95
Localities:	Recorded from at least 38 other localities in this region.
Photo: © Peter Haas. Tennantite from Wheal Jewel, Crofthandy, Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
'Tennantite-Tetrahedrite Series'
Localities:	Reported from at least 10 localities in this region.
Tenorite
Formula:	CuO
Localities:	Reported from at least 79 localities in this region.
Tephroite
Formula:	Mn2+2SiO4
Localities:	Chillaton and Hogstor Mine, Milton Abbot, Tavistock District, Devon, England, UK Treburland Mine, Altarnun, Liskeard District, Cornwall, England, UK Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton area (Northern Dartmoor), Devon, England, UK
Tetradymite
Formula:	Bi2Te2S
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Dan & Diana Weinrich Minerals. Tetradymite from Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region, Cumbria, England, UK
Tetrahedrite
Formula:	Cu6[Cu4(Fe,Zn)2]Sb4S13
Localities:	Reported from at least 45 localities in this region.
Photo: © . Tetrahedrite from Herodsfoot Mine, Lanreath, Liskeard District, Cornwall, England, UK
Tetrahedrite var: Argentian Tetrahedrite
Localities:	Lockridge Mine (Goldstreet Mine), East Tamar Consols, Bere Alston (Beeralstone; incl. Bere Alston Mines; Old Beer Mines; Tamar Silver-Lead Mines), Bere Ferrers (Beer Ferris), Tavistock District, Devon, England, UK Carnewas Mine, St Eval, Wadebridge District, Cornwall, England, UK ? (more information)
Thaumasite
Formula:	Ca3(SO4)[Si(OH)6](CO3) · 12H2O
Localities:	Embleton Quarry, Embleton, North and Western Region (Cumberland), Cumbria, England, UK Burtree Slits, Cowshill, Weardale, North Pennines, Co. Durham, England, UK
Thenardite
Formula:	Na2SO4
Localities:	Mountfield Mine, Mountfield, East Sussex, England, UK Hanover Cove, St Agnes, St Agnes District, Cornwall, England, UK Billingham anhydrite mine, Billingham, Co. Durham, England, UK
Thomsonite-Ca
Formula:	NaCa2[Al5Si5O20] · 6H2O
Locality:	Thurstaston Beach, Wirral, Merseyside, England, UK
Tiemannite
Formula:	HgSe
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Titanite
Formula:	CaTi(SiO4)O
Localities:	Reported from at least 15 localities in this region.
Photo: © Steve Rust. Titanite from Thurstaston Beach, Wirral, Merseyside, England, UK
Tochilinite
Formula:	Fe2+5-6(Mg,Fe2+)5S6(OH)10
Locality:	Lizard Peninsula, Cornwall, England, UK
Todorokite
Formula:	(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12 · 3H2O
Locality:	Beach and Cliff exposures, Port Quin, St Endellion, Wadebridge District, Cornwall, England, UK
Topaz
Formula:	Al2(SiO4)(F,OH)2
Localities:	Reported from at least 27 localities in this region.
Photo: © Topaz. Topaz from VC Quarry, Isle of Lundy, North Devon, Devon, England, UK
Torbernite
Formula:	Cu(UO2)2(PO4)2 · 12H2O
Localities:	Reported from at least 40 localities in this region.
Photo: © . Torbernite from Old Gunnislake Mine, Clitters United Mines, Gunnislake, Calstock, Callington District, Cornwall, England, UK
Tosudite
Formula:	Na0.5(Al,Mg)6((Si,Al)8O18)(OH)12 · 5H2O
Locality:	Lydney Harbour, Forest of Dean, Gloucestershire, England, UK
'Tourmaline'
Formula:	A(D3)G6(T6O18)(BO3)3X3Z
Localities:	Reported from at least 123 localities in this region.
Photo: © Steve Rust. Tourmaline from Wheal Remfry China Clay Pit, Fraddon, St Enoder, St Austell District, Cornwall, England, UK
'Tourmaline var: Achroite'
Localities:	Stenna Gwyn Mine (Stennagwyn Mine), Foxhole, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK Rocks Tin Mine, Rocks and Treverbyn United Tin Mines, Bugle, Treverbyn, St Austell District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Goonbarrow China Clay Pit, Bugle, Treverbyn, St Austell District, Cornwall, England, UK Stamps and Jowl Zawn (Roscommon Cliff), Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
'Tourmaline var: Indicolite'
Localities:	Wheal Kitty, Kitty and Penhalls United Mine, St Agnes, St Agnes District, Cornwall, England, UK St Austell District, Cornwall, England, UK
'Tourmaline var: Rubellite'
Localities:	Wheal Harmony (Wheal Garden), Treleigh Wood Mine, Redruth, Camborne - Redruth - St Day District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © Richard De Nul. Rubellite from Meldon Aplite Quarry, Okehampton area, Devon, England, UK
'Tourmaline var: Verdelite'
Localities:	Wheal Unity, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Dorothy China Clay Pit, Whitemoor, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Photo: © TVM . Verdelite from Meldon Aplite Quarry, Okehampton area, Devon, England, UK
Trembathite
Formula:	(Mg,Fe)3(B7O13)Cl
Locality:	Boulby Mine, Loftus, North Yorkshire, England, UK
Photo: © Knut Eldjarn. Trembathite from Boulby Mine, Loftus, North Yorkshire, England, UK
Tremolite
Formula:	☐{Ca2}{Mg5}(Si8O22)(OH)2
Localities:	Reported from at least 17 localities in this region.
Tridymite
Formula:	SiO2
Locality:	Dinas Head, St Merryn, Wadebridge District, Cornwall, England, UK
Triphylite
Formula:	LiFe2+PO4
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Triplite
Formula:	(Mn2+,Fe2+)2(PO4)(F,OH)
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK
Photo: © Ian Jones. Triplite from Megiliggar Rocks, Breage, Mount's Bay District, Cornwall, England, UK
Triploidite
Formula:	(Mn2+,Fe2+)2(PO4)(OH)
Locality:	Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Tristramite (TL)
Formula:	(Ca,U,Fe)(PO4,SO4) · 2H2O
Type Locality:	Wheal Trewavas (Trewavas Cliff Mine), Rinsey, Breage, Mount's Bay District, Cornwall, England, UK
Reference:	Atkin, D., Basham, I.R., and Bowles, J.F.W. (1983): Mineralogical Magazine 47, 393-396
Localities:	Recorded from at least 5 other localities in this region.
Trögerite
Formula:	(UO2)3(AsO4)2 · 12H2O (?)
Localities:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Photo: © Paul De Bondt 2011. Trögerite from Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Troilite
Formula:	FeS
Locality:	Barwell meteorite, Barwell, Leicestershire, England, UK
Trona
Formula:	Na3H(CO3)2 · 2H2O
Localities:	Billingham anhydrite mine, Billingham, Co. Durham, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Trüstedtite
Formula:	Ni3Se4
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Tsumebite
Formula:	Pb2Cu(PO4)(SO4)(OH)
Locality:	Roughton Gill Mine, Roughton Gill, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
'Tungstic Ochre'
Localities:	East Pool Mine (Pool Old Bal), East Pool and Agar Mine, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK South Crofty Mine (South Wheal Crofty), Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK Poldice Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK Tolvadden Mine, Marazion, Mount's Bay District, Cornwall, England, UK Drakewalls Mine, Drakewalls, Calstock, Callington District, Cornwall, England, UK
Tungstite
Formula:	WO3 · H2O
Locality:	Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Turquoise
Formula:	Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Localities:	Reported from at least 8 localities in this region.
Photo: © De Nul, Richard. Turquoise from Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
Turquoise var: Rashleighite
Formula:	Cu(Al,Fe)6(PO4)4(OH)8 · 5H2O
Localities:	Reported from at least 7 localities in this region.
Photo: © De Nul, Richard. Rashleighite from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Tyrolite
Formula:	Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Localities:	Reported from at least 7 localities in this region.
Tyrrellite
Formula:	Cu(Co3+,Ni3+)2Se4
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Tyuyamunite
Formula:	Ca(UO2)2(VO4)2 · 5-8H2O
Localities:	West Wheal Owles (Cargodna Mine), Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
Photo: © Richard De Nul. Tyuyamunite from Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
'Ugrandite'
Formula:	Ca3X2(SiO4)3
Locality:	Cadger Well Level, Harwood, Teesdale, North Pennines, Co. Durham, England, UK
Ullmannite
Formula:	NiSbS
Localities:	Reported from at least 8 localities in this region.
Photo: © Steve Rust. Ullmannite from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
'UM1995-//-CO:PbU'
Formula:	Pb, U, C, O, H
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
'UM1995-CO-CaHREEEU '
Formula:	Ca, REE, U, C, O, H
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Umangite
Formula:	Cu3Se2
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
'Unnamed (Ba-Al Trisulphide Hydroxide Hydrate)'
Formula:	BaS3 · Ba(OH)2 · 2Al(OH)3 · 8H2O
Localities:	Surrender Smelting Mill (slag locality), Kearton, Reeth, Swaledale, North Pennines, North Yorkshire, England, UK Hipper Slag Mill (slag locality), Holymoorside, Brampton, Derbyshire, England, UK Cromford Smelting Mill (slag locality), Cromford, Derbyshire, England, UK ? (more information) Bradwell Smelting Mill (slag locality), Bradwell, Derbyshire, England, UK ? (more information)
'Unnamed (Ba Sulphite)'
Formula:	BaSO3
Locality:	Surrender Smelting Mill (slag locality), Kearton, Reeth, Swaledale, North Pennines, North Yorkshire, England, UK
'Unnamed (Ba Thiosulphate Fluoride)'
Formula:	Ba2F2(S6+O3S2-)
Localities:	Surrender Smelting Mill (slag locality), Kearton, Reeth, Swaledale, North Pennines, North Yorkshire, England, UK Whashton Smelting Mill (slag locality), Whashton, Richmond, North Pennines, North Yorkshire, England, UK Cromford Smelting Mill (slag locality), Cromford, Derbyshire, England, UK Hipper Slag Mill (slag locality), Holymoorside, Brampton, Derbyshire, England, UK
'Unnamed (Ba Thiosulphate Monohydrate)'
Localities:	Hipper Slag Mill (slag locality), Holymoorside, Brampton, Derbyshire, England, UK Cromford Smelting Mill (slag locality), Cromford, Derbyshire, England, UK Whashton Smelting Mill (slag locality), Whashton, Richmond, North Pennines, North Yorkshire, England, UK Surrender Smelting Mill (slag locality), Kearton, Reeth, Swaledale, North Pennines, North Yorkshire, England, UK Marrick Low Lead Smelt Mill (slag locality), Marrick, Swaledale, North Pennines, North Yorkshire, England, UK
'Unnamed (CuSb2O6)'
Formula:	CuSb2O6
Locality:	Castleside Smelting Mill (slag locality), Castleside, Derwent Valley, North Pennines, Co. Durham, England, UK
'Unnamed (gamma-Zn(OH)2)'
Formula:	γ-Zn(OH)2
Locality:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Photo: © Steve Rust. Unnamed (gamma-Zn(OH)2) from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
'Unnamed (Pd-Hg Selenide)'
Formula:	Pd2HgSe3
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
'Unnamed (Tetragonal Pb Oxide Hydrate)'
Formula:	Pb3O2(OH)2
Locality:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Photo: © Steve Rust. Unnamed (Tetragonal Pb Oxide Hydrate) from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
'Unnamed (Zn-analogue of Ktenasite)'
Formula:	Zn(Zn,Cu)4(SO4)2(OH)6 · 6H2O
Localities:	Smallcleugh Mine, Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Uraninite
Formula:	UO2
Localities:	Reported from at least 17 localities in this region.
Photo: © Bernie Millington. Uraninite from South Terras Mine, St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Uraninite var: Pitchblende
Formula:	UO2
Localities:	Reported from at least 25 localities in this region.
Photo: © Paul De Bondt 2011. Pitchblende from Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Uraninite var: Sooty Uraninite
Locality:	Kingswood Mine, Buckfastleigh, Dartmoor & Teign Valley District, Devon, England, UK
Photo: Sooty Uraninite from Kingswood Mine, Buckfastleigh, Dartmoor & Teign Valley District, Devon, England, UK
Uranophane
Formula:	Ca(UO2)2[HSiO4]2 · 5H2O
Localities:	West Wheal Owles (Cargodna Mine), Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Merrivale Quarry, Whitchurch, Tavistock District, Devon, England, UK
Photo: © Van King. Uranophane from Merrivale Quarry, Whitchurch, Tavistock District, Devon, England, UK
Uranopilite
Formula:	(UO2)6(SO4)O2(OH)6 · 14H2O
Localities:	Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK St Just District, Cornwall, England, UK
Uranospathite (TL)
Formula:	(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
Type Locality:	Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	[Embrey & Symes, 1987, 45 - "Minerals of Cornwall and Devon"]
Uranospinite
Formula:	Ca(UO2)(AsO4)2 · 10H2O
Locality:	Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Photo: © Peter Haas. Uranospinite from Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
'Uvite'
Formula:	Ca(Mg3)MgAl5(Si6O18)(BO3)3(OH)3(F/OH)
Locality:	Grylls Bunny, Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK
Vaesite
Formula:	NiS2
Locality:	Settlingstones Mine, Fourstones, Tyne Valley, Northumberland, England, UK
Valentinite
Formula:	Sb2O3
Localities:	Reported from at least 10 localities in this region.
Photo: © Steve Rust. Valentinite from Poltreworgey Mine, St Endellion, Wadebridge District, Cornwall, England, UK
Valleriite
Formula:	(Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Localities:	Pol Cornick, Mullion, Lizard Peninsula, Cornwall, England, UK The Rill, Mullion, Lizard Peninsula, Cornwall, England, UK
Vanadinite
Formula:	Pb5(VO4)3Cl
Localities:	Reported from at least 13 localities in this region.
Photo: © . Vanadinite from Judkins Quarry, Nuneaton, Warwickshire, England, UK
Vandenbrandeite
Formula:	Cu(UO2)(OH)4
Locality:	Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Vandendriesscheite
Formula:	PbU7O22 · 12H2O
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Variscite
Formula:	AlPO4 · 2H2O
Localities:	Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Hensbarrow China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Treore Mine, St Endellion, Wadebridge District, Cornwall, England, UK High Down Quarry, Filleigh, North Devon, Devon, England, UK Cobalt Mine, Scar Crag, Causey Pike, Braithwaite District, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © Ian Jones. Variscite from High Down Quarry, Filleigh, North Devon, Devon, England, UK
'Varlamoffite'
Formula:	(Sn,Fe)(O,OH)2
Localities:	Reported from at least 12 localities in this region.
Photo: © Ian Jones. Varlamoffite from Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Vauquelinite
Formula:	Pb2Cu(CrO4)(PO4)(OH)
Locality:	Greystones Quarry, Lezant, Callington District, Cornwall, England, UK
Veatchite-p
Formula:	Sr2B11O16(OH)5 · H2O
Locality:	Eskdale No. 2 borehole (Aislaby), Eskdale, North Yorkshire, England, UK
Verbeekite
Formula:	PdSe2
Locality:	Hope's Nose, Torquay, South Devon, Devon, England, UK
Vésigniéite
Formula:	BaCu3(VO4)2(OH)2
Localities:	Bardon Hill Quarry, Bardon, Leicestershire, England, UK New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Newhurst Quarry, Shepshed, Leicestershire, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK Torr Works Quarry (Merehead Quarry), Cranmore, Somerset, England, UK (more information)
Photo: © Steve Rust. Vésigniéite from New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
Vesuvianite
Formula:	(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Localities:	Reported from at least 6 localities in this region.
Photo: © HW. Vesuvianite from Barrasford Quarry, Barrasford, Northumberland, England, UK
Vesuvianite var: Manganoan Vesuvianite
Locality:	Eastern Cliff, Kennack, Ruan - Grade, Lizard Peninsula, Cornwall, England, UK
Violarite
Formula:	Fe2+Ni3+2S4
Localities:	Settlingstones Mine, Fourstones, Tyne Valley, Northumberland, England, UK Tynebottom Mine, Garrigill, South Tynedale, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Vivianite (TL)
Formula:	Fe2+3(PO4)2 · 8H2O
Type Locality:	Wheal Kind (Wheal Kine), West Wheal Kitty group, St Agnes, St Agnes District, Cornwall, England, UK
Reference:	Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Embrey & Symes, 1987, 51 - "Minerals of Cornwall and Devon"
Localities:	Recorded from at least 26 other localities in this region.
Photo: © Bill Gordon. Vivianite from Southleigh Landfill Site, Havant, Hampshire, England, UK
Vochtenite (TL)
Formula:	(Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2O
Type Locality:	Wheal Basset, Basset Mines, Illogan, Camborne - Redruth - St Day District, Cornwall, England, UK
Reference:	Mineralogical Magazine 1989 53 : 473-478
Volborthite
Formula:	Cu3(V2O7)(OH)2 · 2H2O
Localities:	New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Littleham Bay, Budleigh Salterton, East Devon, Devon, England, UK
'Wad'
Localities:	Reported from at least 32 localities in this region.
Photo: © 2008, JGW. Wad from Mendip Hills, Somerset, England, UK
Wavellite (TL)
Formula:	Al3(PO4)2(OH,F)3 · 5H2O
Type Locality:	High Down Quarry, Filleigh, North Devon, Devon, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 963; BMS Database
Localities:	Recorded from at least 12 other localities in this region.
Photo: © Pete Nancarrow. Wavellite from High Down Quarry, Filleigh, North Devon, Devon, England, UK
Waylandite
Formula:	BiAl3(PO4)2(OH)6
Localities:	Wheal Remfry (Wheal Remfrey) China Clay Pit, Fraddon, St Enoder, St Austell District, Cornwall, England, UK Restormel Royal Iron Mine (Trinity Mine), Lostwithiel, St Austell District, Cornwall, England, UK Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Photo: © Christine Rust. Waylandite from Wheal Remfry China Clay Pit, Fraddon, St Enoder, St Austell District, Cornwall, England, UK
Weddellite
Formula:	Ca(C2O4) · 2H2O
Localities:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK Fall Hill Quarry, Milltown, Ashover, Derbyshire, England, UK
Photo: © Steve Rust. Weddellite from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Weilite
Formula:	Ca(HAsO4)
Locality:	Wanthwaite Mine, St John's in the Vale, Threlkeld District, North and Western Region (Cumberland), Cumbria, England, UK
Whewellite ?
Formula:	Ca(C2O4) · H2O
Locality:	Mealbank Quarry, Ingleton, Craven District, North Pennines, North Yorkshire, England, UK - erroneously reported
Whitmoreite
Formula:	Fe2+Fe3+2(PO4)2(OH)2 · 4H2O
Locality:	Gravel Hill Mine (Cliff Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, St Agnes District, Cornwall, England, UK
Wickmanite
Formula:	Mn2+[Sn(OH)6]
Locality:	Wheal Cock Zawn, Cliff outcrops, Botallack, St Just, St Just District, Cornwall, England, UK
Widenmannite
Formula:	Pb2(UO2)(CO3)3
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Willemite
Formula:	Zn2SiO4
Locality:	Tindale Fell Spelter Works (slag locality), Tindale (Tindale Fell), City of Carlisle District, Cumbria, England, UK
Witherite (TL)
Formula:	BaCO3
Type Locality:	Brownley Hill Mine (Bloomsberry Horse Level), Nenthead, Alston Moor District, North Pennines, North and Western Region (Cumberland), Cumbria, England, UK
Reference:	GREEN, D.I., McCALLUM, D. and WOOD, M. (2000) Famous mineral localities: The Brownley Hill Mine, Alston Moor District, Cumbria, England. Mineralogical Record, 31, 231-250.
Localities:	Recorded from at least 52 other localities in this region.
Photo: © Rob Lavinsky. Witherite from Alston Moor District, North Pennines, North and Western Region, Cumbria, England, UK
Wittichenite
Formula:	Cu3BiS3
Localities:	Geevor Mine (North Levant Mine), Pendeen, St Just, St Just District, Cornwall, England, UK Levant Mine, Trewellard, St Just, St Just District, Cornwall, England, UK Seathwaite Mine, Coniston District, South Western Region (Furness), Cumbria, England, UK Hingston Down Quarry, Gunnislake, Calstock, Callington District, Cornwall, England, UK Botallack Mine, Botallack, St Just, St Just District, Cornwall, England, UK ? (more information)
'Wolframite'
Formula:	(Fe2+)WO4 to (Mn2+)WO4
Localities:	Reported from at least 92 localities in this region.
Photo: © J.Ralph 2004. Wolframite from Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK
Wollastonite
Formula:	CaSiO3
Localities:	Reported from at least 8 localities in this region.
Photo: © Ian Jones. Wollastonite from Meldon Quarry, Okehampton area, Devon, England, UK
Wölsendorfite
Formula:	(Pb,Ca)U2O7 · 2H2O
Locality:	Loe Warren Zawn, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Woodwardite (TL)
Formula:	Cu1-xAlx(OH)2[SO4]x/2 · nH2O
Type Locality:	Cornwall, England, UK
Reference:	Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 580; Mineralogical Record: 9: 113.
Localities:	Recorded from at least 6 other localities in this region.
Photo: © Elmar Lackner. Woodwardite from South Caradon Mine, Caradon Hill, St Cleer, Liskeard District, Cornwall, England, UK
Wooldridgeite (TL)
Formula:	Na2CaCu2+2(P2O7)2 · 10H2O
Type Locality:	Judkins Quarry, Nuneaton, Warwickshire, England, UK
Description:	Probably formed from P-rich groundwater and guano.
Reference:	Mineralogical Magazine: 63: 13-16.
Photo: © R. Bottrill. Wooldridgeite from Judkins Quarry, Nuneaton, Warwickshire, England, UK
Wroewolfeite
Formula:	Cu4(SO4)(OH)6 · 2H2O
Localities:	Reported from at least 11 localities in this region.
Photo: © Brent Thorne 2010. Wroewolfeite from Craddock Moor Mine, Craddock Moor, St Cleer, Liskeard District, Cornwall, England, UK
Wulfenite
Formula:	Pb(MoO4)
Localities:	Reported from at least 60 localities in this region.
Photo: © Steve Rust. Wulfenite from Isolation Mine, Snelston, Derbyshire, England, UK
Wülfingite
Formula:	Zn(OH)2
Locality:	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Photo: © Steve Rust. Wülfingite from Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK
Wurtzite
Formula:	(Zn,Fe)S
Localities:	Reported from at least 11 localities in this region.
Photo: © Steve Rust. Wurtzite from Penberthy Croft Mine, St Hilary, Mount's Bay District, Cornwall, England, UK
Xanthiosite
Formula:	Ni3(AsO4)2
Locality:	South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen, St Stephen-in-Brannel, St Austell District, Cornwall, England, UK
Xenotime-(Y)
Formula:	Y(PO4)
Localities:	Carnmenellis Area, Wendron & Falmouth District, Cornwall, England, UK Carbis Bay, Lelant, St Ives District, Cornwall, England, UK
Yarrowite
Formula:	Cu9S8
Localities:	Cannington Park Quarry, Cannington, Bridgwater (Bridgewater), Somerset, England, UK New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK Judkins Quarry, Nuneaton, Warwickshire, England, UK Old Sandbed Mine (Old Sandbeds Mine), Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
Photo: © R. Bottrill. Yarrowite from Judkins Quarry, Nuneaton, Warwickshire, England, UK
Zálesíite
Formula:	(Ca,Y)Cu6(AsO4)2(HAsO4,AsO4)(OH)6 · 3H2O
Localities:	Reported from at least 6 localities in this region.
Photo: © Steve Rust. Zálesíite from New Cliffe Hill Quarry, Stanton under Bardon, Leicestershire, England, UK
'Zaratite'
Formula:	Ni3(CO3)(OH)4 · 4H2O
Localities:	Newdigate Colliery, Bedworth, Warwickshire, England, UK Clayton Mine, Ecton, Staffordshire, England, UK
Zeunerite
Formula:	Cu(UO2)2(AsO4)2 · 12H2O
Localities:	Reported from at least 10 localities in this region.
Photo: © Robert O. Meyer. Zeunerite from Wheal Edward, Wheal Owles, Botallack, St Just, St Just District, Cornwall, England, UK
Zincite
Formula:	(Zn,Mn2+,Fe2+)O
Locality:	Tindale Fell Spelter Works (slag locality), Tindale (Tindale Fell), City of Carlisle District, Cumbria, England, UK
Zinkenite
Formula:	Pb9Sb22S42
Localities:	Poltreworgey Mine, St Endellion, Wadebridge District, Cornwall, England, UK Carrock Mine, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Wet Swine Gill, Coombe Height, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK Grainsgill, Carrock Fell, Caldbeck Fells, North and Western Region (Cumberland), Cumbria, England, UK
'Zinnwaldite'
Formula:	KLiFe2+Al(AlSi3O10)(F,OH)2
Localities:	Hensbarrow China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Great Work Mine (incl. Leeds Mine), Godolphin Cross, Breage, Mount's Bay District, Cornwall, England, UK Gunheath China Clay Pit, Stenalees, Treverbyn, St Austell District, Cornwall, England, UK Cligga Head, Perranzabuloe, St Agnes District, Cornwall, England, UK
Photo: © Richard De Nul. Zinnwaldite from Great Work Mine, Godolphin Cross, Breage, Mount's Bay District, Cornwall, England, UK
Zippeite
Formula:	K3(UO2)4(SO4)2O3(OH) · 3H2O
Localities:	Reported from at least 11 localities in this region.
Zircon
Formula:	ZrSiO4
Localities:	Reported from at least 13 localities in this region.
Zlatogorite
Formula:	NiCuSb2
Locality:	Castleside Smelting Mill (slag locality), Castleside, Derwent Valley, North Pennines, Co. Durham, England, UK
Zoisite
Formula:	{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Localities:	Warren's Quarry, Camelford, Lanteglos-by-Camelford, Wadebridge District, Cornwall, England, UK Tolpetherwin Quarry, South Petherwin, Launceston, Callington District, Cornwall, England, UK Dinas Head, St Merryn, Wadebridge District, Cornwall, England, UK Meldon Aplite Quarry, Okehampton area (Northern Dartmoor), Devon, England, UK
Zunyite
Formula:	Al13Si5O20(OH,F)18Cl
Locality:	Embleton Quarry, Embleton, North and Western Region (Cumberland), Cumbria, England, UK
Zwieselite
Formula:	(Fe2+,Mn2+)2(PO4)F
Locality:	Megiliggar Rocks (Tremearne pegmatite), Breage, Mount's Bay District, Cornwall, England, UK

953 entries listed. 708 valid minerals. 61 type localities (valid minerals). 2 type localities (others). 12 erroneous literature entries.

References