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Clifford Amalgamated Mines, St Day, Gwennap, Cornwall, England, UKi
Regional Level Types
Clifford Amalgamated MinesGroup of Mines
St DayVillage
GwennapCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 13' 59'' North , 5° 9' 32'' West
Latitude & Longitude (decimal):
50.23315,-5.15903
GeoHash:
G#: gbumf8em3
GRN:
N34W03
Type:
Group of Mines
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
St. Day700 (2011)2.0km
Chacewater1,226 (2017)2.6km
Perranwell1,207 (2017)3.5km
Ponsanooth967 (2017)4.0km
Redruth42,690 (2017)4.6km
Mindat Locality ID:
194314
Long-form identifier:
mindat:1:2:194314:9
GUID (UUID V4):
0002c3eb-edc7-4800-9220-7713e39a3766


Clifford Amalgamated is a name given to the Great Consolidated Mines and United Mine following their amalgamation in 1861.

Between 1861 and 1872, 94728 tons of copper ore, 7 tons of arsenic, 5550 tons of pyrite and 1011 tons of zinc ore were produced.

In relation to mineral localities within this group, unless detail information is lacking they should be assigned to the individual mines where possible.

The group lies within the boundaries of the Gwennap parish.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

39 valid minerals.

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜ Anatase
Formula: TiO2
β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Azurite
Formula: Cu3(CO3)2(OH)2
β“˜ Baryte
Formula: BaSO4
β“˜ Bornite
Formula: Cu5FeS4
β“˜ Brochantite
Formula: Cu4(SO4)(OH)6
β“˜ Cassiterite
Formula: SnO2
Localities: Reported from at least 7 localities in this region.
β“˜ Chalcanthite
Formula: CuSO4 · 5H2O
β“˜ Chalcocite
Formula: Cu2S
Localities: Reported from at least 6 localities in this region.
β“˜ Chalcophyllite
Formula: Cu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
β“˜ Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 9 localities in this region.
β“˜ Chalcopyrite var. Blister Copper
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
β“˜ Copper
Formula: Cu
Localities: Reported from at least 7 localities in this region.
β“˜ Cornubite
Formula: Cu5(AsO4)2(OH)4
β“˜ Cuprite
Formula: Cu2O
β“˜ Cuprite var. Chalcotrichite
Formula: Cu2O
β“˜ 'Feldspar Group'
β“˜ Fluorite
Formula: CaF2
β“˜ Galena
Formula: PbS
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Gypsum
Formula: CaSO4 · 2H2O
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ Libethenite
Formula: Cu2(PO4)(OH)
β“˜ 'Limonite'
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Marcasite
Formula: FeS2
β“˜ Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
β“˜ Millerite
Formula: NiS
β“˜ Mimetite
Formula: Pb5(AsO4)3Cl
β“˜ Molybdenite
Formula: MoS2
β“˜ Olivenite
Formula: Cu2(AsO4)(OH)
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ Pseudomalachite
Formula: Cu5(PO4)2(OH)4
β“˜ Pyrite
Formula: FeS2
Localities: Reported from at least 6 localities in this region.
β“˜ Quartz
Formula: SiO2
Localities: Reported from at least 10 localities in this region.
β“˜ Quartz var. Rock Crystal
Formula: SiO2
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Scorodite
Formula: Fe3+AsO4 · 2H2O
β“˜ Siderite
Formula: FeCO3
β“˜ Sphalerite
Formula: ZnS
Localities: Reported from at least 6 localities in this region.
β“˜ 'Tennantite Subgroup'
Formula: Cu6(Cu4C2+2)As4S12S
β“˜ Tenorite
Formula: CuO
β“˜ Uraninite
Formula: UO2
β“˜ 'Wolframite Group'

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Bornite2.BA.15Cu5FeS4
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite
var. Blister Copper		2.CB.10aCuFeS2
β“˜2.CB.10aCuFeS2
β“˜Millerite2.CC.20NiS
β“˜Galena2.CD.10PbS
β“˜Molybdenite2.EA.30MoS2
β“˜Pyrite2.EB.05aFeS2
β“˜Marcasite2.EB.10aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
β“˜'Tennantite Subgroup'2.GB.05Cu6(Cu4C2+2)As4S12S
Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Cuprite
var. Chalcotrichite		4.AA.10Cu2O
β“˜4.AA.10Cu2O
β“˜Tenorite4.AB.10CuO
β“˜Quartz4.DA.05SiO2
β“˜var. Rock Crystal4.DA.05SiO2
β“˜Cassiterite4.DB.05SnO2
β“˜'Wolframite Group'4.DB.30 va
β“˜Anatase4.DD.05TiO2
β“˜Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
β“˜Siderite5.AB.05FeCO3
β“˜Azurite5.BA.05Cu3(CO3)2(OH)2
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Baryte7.AD.35BaSO4
β“˜Brochantite7.BB.25Cu4(SO4)(OH)6
β“˜Chalcanthite7.CB.20CuSO4 Β· 5H2O
β“˜Melanterite7.CB.35Fe2+(H2O)6SO4 Β· H2O
β“˜Gypsum7.CD.40CaSO4 Β· 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Olivenite8.BB.30Cu2(AsO4)(OH)
β“˜Libethenite8.BB.30Cu2(PO4)(OH)
β“˜Pseudomalachite8.BD.05Cu5(PO4)2(OH)4
β“˜Cornubite8.BD.30Cu5(AsO4)2(OH)4
β“˜Mimetite8.BN.05Pb5(AsO4)3Cl
β“˜Scorodite8.CD.10Fe3+AsO4 Β· 2H2O
β“˜Chalcophyllite8.DF.30Cu18Al2(AsO4)4(SO4)3(OH)24 Β· 36H2O
Group 9 - Silicates
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
β“˜Orthoclase9.FA.30K(AlSi3O8)
Unclassified
β“˜'Limonite'-
β“˜'Feldspar Group'-
β“˜'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ AzuriteCu3(CO3)2(OH)2
Hβ“˜ BrochantiteCu4(SO4)(OH)6
Hβ“˜ ChalcanthiteCuSO4 · 5H2O
Hβ“˜ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ CornubiteCu5(AsO4)2(OH)4
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ GypsumCaSO4 · 2H2O
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ LibetheniteCu2(PO4)(OH)
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Hβ“˜ OliveniteCu2(AsO4)(OH)
Hβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ ScoroditeFe3+AsO4 · 2H2O
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cβ“˜ AzuriteCu3(CO3)2(OH)2
Cβ“˜ MalachiteCu2(CO3)(OH)2
Cβ“˜ SideriteFeCO3
OOxygen
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ AnataseTiO2
Oβ“˜ AzuriteCu3(CO3)2(OH)2
Oβ“˜ BaryteBaSO4
Oβ“˜ BrochantiteCu4(SO4)(OH)6
Oβ“˜ CassiteriteSnO2
Oβ“˜ ChalcanthiteCuSO4 · 5H2O
Oβ“˜ Cuprite var. ChalcotrichiteCu2O
Oβ“˜ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ CornubiteCu5(AsO4)2(OH)4
Oβ“˜ CupriteCu2O
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ GypsumCaSO4 · 2H2O
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ LibetheniteCu2(PO4)(OH)
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Oβ“˜ MimetitePb5(AsO4)3Cl
Oβ“˜ OliveniteCu2(AsO4)(OH)
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Oβ“˜ QuartzSiO2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ ScoroditeFe3+AsO4 · 2H2O
Oβ“˜ SideriteFeCO3
Oβ“˜ TenoriteCuO
Oβ“˜ UraniniteUO2
Oβ“˜ Quartz var. Rock CrystalSiO2
FFluorine
Fβ“˜ FluoriteCaF2
NaSodium
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
AlAluminium
Alβ“˜ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ Quartz var. Rock CrystalSiO2
PPhosphorus
Pβ“˜ LibetheniteCu2(PO4)(OH)
Pβ“˜ PseudomalachiteCu5(PO4)2(OH)4
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BaryteBaSO4
Sβ“˜ BorniteCu5FeS4
Sβ“˜ BrochantiteCu4(SO4)(OH)6
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcanthiteCuSO4 · 5H2O
Sβ“˜ ChalcociteCu2S
Sβ“˜ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Sβ“˜ GalenaPbS
Sβ“˜ GypsumCaSO4 · 2H2O
Sβ“˜ MarcasiteFeS2
Sβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Sβ“˜ MilleriteNiS
Sβ“˜ MolybdeniteMoS2
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
Sβ“˜ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Sβ“˜ Chalcopyrite var. Blister CopperCuFeS2
ClChlorine
Clβ“˜ MimetitePb5(AsO4)3Cl
KPotassium
Kβ“˜ OrthoclaseK(AlSi3O8)
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ FluoriteCaF2
Caβ“˜ GypsumCaSO4 · 2H2O
TiTitanium
Tiβ“˜ AnataseTiO2
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ BorniteCu5FeS4
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ MarcasiteFeS2
Feβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Feβ“˜ PyriteFeS2
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feβ“˜ ScoroditeFe3+AsO4 · 2H2O
Feβ“˜ SideriteFeCO3
Feβ“˜ Chalcopyrite var. Blister CopperCuFeS2
NiNickel
Niβ“˜ MilleriteNiS
CuCopper
Cuβ“˜ AzuriteCu3(CO3)2(OH)2
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ BrochantiteCu4(SO4)(OH)6
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcanthiteCuSO4 · 5H2O
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ Cuprite var. ChalcotrichiteCu2O
Cuβ“˜ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ CornubiteCu5(AsO4)2(OH)4
Cuβ“˜ CupriteCu2O
Cuβ“˜ CopperCu
Cuβ“˜ LibetheniteCu2(PO4)(OH)
Cuβ“˜ MalachiteCu2(CO3)(OH)2
Cuβ“˜ OliveniteCu2(AsO4)(OH)
Cuβ“˜ PseudomalachiteCu5(PO4)2(OH)4
Cuβ“˜ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Cuβ“˜ TenoriteCuO
Cuβ“˜ Chalcopyrite var. Blister CopperCuFeS2
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Asβ“˜ CornubiteCu5(AsO4)2(OH)4
Asβ“˜ MimetitePb5(AsO4)3Cl
Asβ“˜ OliveniteCu2(AsO4)(OH)
Asβ“˜ ScoroditeFe3+AsO4 · 2H2O
Asβ“˜ Tennantite SubgroupCu6(Cu4C22+)As4S12S
MoMolybdenum
Moβ“˜ MolybdeniteMoS2
SnTin
Snβ“˜ CassiteriteSnO2
BaBarium
Baβ“˜ BaryteBaSO4
PbLead
Pbβ“˜ GalenaPbS
Pbβ“˜ MimetitePb5(AsO4)3Cl
UUranium
Uβ“˜ UraniniteUO2

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
β“˜ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
β“˜ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
β“˜ Greisenization (latest age)~280 MaCornwall, England, UK
β“˜ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
β“˜ Formation of metallized pegmatites~285 MaCornwall, England, UK
β“˜ Greisenization (earliest age)~285 MaCornwall, England, UK
β“˜ Emplacement of major plutons~295 MaCornwall, England, UK

Localities in this Region

UK
UK

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK

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