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Cheesewring Quarry, Minions, Linkinhorne, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 31' 26'' North , 4° 27' 23'' West
Latitude & Longitude (decimal): 50.52395,-4.45646
GeoHash:G#: gbuz6tdgk
UK National Grid Reference:SX259723
Locality type:Quarry
Köppen climate type:Cfb : Temperate oceanic climate


A historic granite quarry adjacent to the Cheesewring tor located approximately 1 mile NW of the village of Minions on Bodmin Moor. The granite forms part of the late-Carboniferous and early-Permian Cornubian batholith and carries accessory andalusite (i.e. peraluminous).
Quarrying started in 1845 and diminished by the early 20th century, however, more recent work occurred as recently as 1984 and resulted in the destruction of some industrial archaeological sites.

Bowman (1911) described bertrandite in the form of small, tabular crystals in small cavities in joints in the granite associated with adularia, fluorite, quartz crystals and small needles of greenish tourmaline. These joints also carry wolframite, pyrite, torbernite, and anatase.

Elsewhere in the quarry, Bowman noted an occurrence of autunite associated with pale blue apatite, quartz, and orthoclase.

Note on the mineral list: Danburite, Durangite, and Milarite have been removed from the list due to the high probability of fraudulent recording of discovery by A.W.G. Kingsbury.

Regions containing this locality

Devon and Cornwall metalliferous mining district, England, UK

Mining District - 762 mineral species & varietal names listed

Liskeard Mining District, Cornwall, England, UK

Mining District - 178 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals. 3 erroneous literature entries.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Hall, T.M. (1868): 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.
Anatase
Formula: TiO2
Habit: bipyramidal crystals (p {111}, with small c {001})
Colour: black or tarnished
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Andalusite
Formula: Al2(SiO4)O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Apatite'
Habit: tabular with pyramid-planes
Colour: pale blue transparent
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
'Asbestos'
Reference: Hall, T.M. (1868): 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.
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Bertrandite
Formula: Be4(Si2O7)(OH)2
Habit: rhombic, hexagonal, or oblong tabular plates, usually 2-3mm in length by about 0.3mm thick, but also as large as 11mm in length by 0.8mm thick
Colour: colourless, brown (stained by iron oxide)
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Goley, P. and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications.
Beudantite
Formula: PbFe3(AsO4)(SO4)(OH)6
Reference: Fluorite: The Collector's Choice. Extra Lapis English No. 9
Brookite
Formula: TiO2
'Chlorite Group'
Reference: Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
'Clays'
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Danburite
Formula: CaB2Si2O8
Description: Kingsbury specimen
Reference: Michael S. Rumsey, George Ryback and Richard Tayler (2011) Danburite from Meldon Quarry, Okehampton and other UK localities. Journal of the Russell Society 14:26-32; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Durangite
Formula: NaAl(AsO4)F
Description: given to BM by A.Kingsbury - should be considered suspect
Reference: Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Fluorite
Formula: CaF2
Habit: octahedra
Colour: white, blue, violet, purple
Reference: Fluorite: The Collector's Choice. Extra Lapis English No. 9.; Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
'Granite'
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Milarite
Formula: K2Ca4Al2Be4Si24O60 · H2O
Description: Found by A. W. G. Kingsbury (1951-2) and given to BM(NH)
Reference: Min Rec 35:5 pp405-418; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177 (referring to Kingsbury); Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (referring to Kingsbury)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Muscovite var: Gilbertite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Orthoclase
Formula: K(AlSi3O8)
Habit: adularia-habit, sometimes showing baveno-twinning, Carlsbad twins
Reference: Collins, J.H. (1892) A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Phenakite
Formula: Be2SiO4
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Golley & Williams (1995) Cornish Mineral Reference Manual.
Pyrite
Formula: FeS2
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Quartz
Formula: SiO2
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Sillimanite
Formula: Al2(SiO4)O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Soapstone' ?
Description: Soapstone has been reported as occurring here by Phillips (1823), but Collins (1892) lists it with a question mark.
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Sphalerite
Formula: ZnS
Colour: reddish
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Stolzite
Formula: Pb(WO4)
Reference: Green, D.I., Hubbard, N., and Jewson, C. (1996) Stolzite from two Cornish localities. UK Journal of Mines & Minerals, 16, 14.
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Habit: square tables with bevelled edges and bipyramidal crystals without basal plane
Colour: dark green
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Colour: greenish
Description: "Larger (milarite) prisms (< 8 mm) in vugs in a tourmaline vein" were reportedly found by A.W.G. Kingsbury (1951-2) and donated to the BM(NH)."
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine vol. 42, n° 322: 169-177.
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Wulfenite
Formula: Pb(MoO4)
Habit: Bipyramiddle
Colour: Pale brown
Reference: UKJMM No16

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 4 - Oxides and Hydroxides
'Anatase'4.DD.05TiO2
'Brookite'4.DD.10TiO2
Quartz4.DA.05SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Stolzite7.GA.05Pb(WO4)
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
'Autunite'8.EB.05Ca(UO2)2(PO4)2 · 11H2O
'Beudantite'8.BL.05PbFe3(AsO4)(SO4)(OH)6
'Durangite' ?8.BH.10NaAl(AsO4)F
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
'Actinolite'9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Andalusite'9.AF.10Al2(SiO4)O
'Bertrandite'9.BD.05Be4(Si2O7)(OH)2
'Danburite' ?9.FA.65CaB2Si2O8
Milarite ?9.CM.05K2Ca4Al2Be4Si24O60 · H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Gilbertite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase9.FA.30K(AlSi3O8)
Phenakite9.AA.05Be2SiO4
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Sillimanite9.AF.05Al2(SiO4)O
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Asbestos'-
'Chlorite Group'-
'Clays'-
Granite-
Soapstone ?-
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z
Wolframite-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
AX2
Anatase4.4.4.1TiO2
Brookite4.4.5.1TiO2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Autunite40.2a.1.1Ca(UO2)2(PO4)2 · 11H2O
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Durangite ?41.5.5.2NaAl(AsO4)F
Group 43 - COMPOUND PHOSPHATES, ETC.
Anhydrous Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Beudantite43.4.1.1PbFe3(AsO4)(SO4)(OH)6
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Stolzite48.1.3.2Pb(WO4)
Wulfenite48.1.3.1Pb(MoO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Phenakite51.1.1.1Be2SiO4
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Andalusite52.2.2b.1Al2(SiO4)O
Sillimanite52.2.2a.1Al2(SiO4)O
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Bertrandite56.1.1.1Be4(Si2O7)(OH)2
Si2O7 Groups and O, OH, F, and H2O with[Si2O7] with borate groups
Danburite ?56.3.1.1CaB2Si2O8
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 63 - CYCLOSILICATES Condensed Rings
Condensed Rings (Milarite - Osumilite group)
Milarite ?63.2.1a.12K2Ca4Al2Be4Si24O60 · H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Apatite'-
'Asbestos'-
'Chlorite Group'-
'Clays'-
'Granite'-
Muscovite
var: Gilbertite
-KAl2(AlSi3O10)(OH)2
'Soapstone' ?-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H AutuniteCa(UO2)2(PO4)2 · 11H2O
H BertranditeBe4(Si2O7)(OH)2
H BeudantitePbFe3(AsO4)(SO4)(OH)6
H Muscovite (var: Gilbertite)KAl2(AlSi3O10)(OH)2
H MilariteK2Ca4Al2Be4Si24O60 · H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TorberniteCu(UO2)2(PO4)2 · 12H2O
BeBeryllium
Be BertranditeBe4(Si2O7)(OH)2
Be MilariteK2Ca4Al2Be4Si24O60 · H2O
Be PhenakiteBe2SiO4
BBoron
B DanburiteCaB2Si2O8
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O AnataseTiO2
O AndalusiteAl2(SiO4)O
O AutuniteCa(UO2)2(PO4)2 · 11H2O
O BertranditeBe4(Si2O7)(OH)2
O BeudantitePbFe3(AsO4)(SO4)(OH)6
O BrookiteTiO2
O DanburiteCaB2Si2O8
O DurangiteNaAl(AsO4)F
O Muscovite (var: Gilbertite)KAl2(AlSi3O10)(OH)2
O MilariteK2Ca4Al2Be4Si24O60 · H2O
O MuscoviteKAl2(AlSi3O10)(OH)2
O OrthoclaseK(AlSi3O8)
O PhenakiteBe2SiO4
O QuartzSiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O SillimaniteAl2(SiO4)O
O StolzitePb(WO4)
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
O WulfenitePb(MoO4)
FFluorine
F DurangiteNaAl(AsO4)F
F FluoriteCaF2
NaSodium
Na DurangiteNaAl(AsO4)F
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
AlAluminium
Al AndalusiteAl2(SiO4)O
Al DurangiteNaAl(AsO4)F
Al Muscovite (var: Gilbertite)KAl2(AlSi3O10)(OH)2
Al MilariteK2Ca4Al2Be4Si24O60 · H2O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al OrthoclaseK(AlSi3O8)
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SillimaniteAl2(SiO4)O
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si AndalusiteAl2(SiO4)O
Si BertranditeBe4(Si2O7)(OH)2
Si DanburiteCaB2Si2O8
Si Muscovite (var: Gilbertite)KAl2(AlSi3O10)(OH)2
Si MilariteK2Ca4Al2Be4Si24O60 · H2O
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OrthoclaseK(AlSi3O8)
Si PhenakiteBe2SiO4
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si SillimaniteAl2(SiO4)O
PPhosphorus
P AutuniteCa(UO2)2(PO4)2 · 11H2O
P TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
S BeudantitePbFe3(AsO4)(SO4)(OH)6
S PyriteFeS2
S SphaleriteZnS
KPotassium
K Muscovite (var: Gilbertite)KAl2(AlSi3O10)(OH)2
K MilariteK2Ca4Al2Be4Si24O60 · H2O
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca AutuniteCa(UO2)2(PO4)2 · 11H2O
Ca DanburiteCaB2Si2O8
Ca FluoriteCaF2
Ca MilariteK2Ca4Al2Be4Si24O60 · H2O
TiTitanium
Ti AnataseTiO2
Ti BrookiteTiO2
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe BeudantitePbFe3(AsO4)(SO4)(OH)6
Fe PyriteFeS2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
CuCopper
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Zn SphaleriteZnS
AsArsenic
As BeudantitePbFe3(AsO4)(SO4)(OH)6
As DurangiteNaAl(AsO4)F
MoMolybdenum
Mo WulfenitePb(MoO4)
WTungsten
W StolzitePb(WO4)
W Wolframite(Fe2+)WO4 to (Mn2+)WO4
PbLead
Pb BeudantitePbFe3(AsO4)(SO4)(OH)6
Pb StolzitePb(WO4)
Pb WulfenitePb(MoO4)
UUranium
U AutuniteCa(UO2)2(PO4)2 · 11H2O
U TorberniteCu(UO2)2(PO4)2 · 12H2O

Geochronology

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

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Permian - Carboniferous
251.902 - 358.9 Ma



ID: 2028951
Unnamed Igneous Intrusion, Carboniferous To Permian

Age: Phanerozoic (251.902 - 358.9 Ma)

Lithology: Felsic-rock

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Early Carboniferous
323.2 - 358.9 Ma



ID: 3192903
Paleozoic sedimentary rocks

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Ordovician
443.8 - 485.4 Ma



ID: 3151916
Ordovician granite

Age: Ordovician (443.8 - 485.4 Ma)

Lithology: Granite group

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Bowman, H.L. (1911) On the occurrence of bertrandite at the Cheesewring Quarry, near Liskeard, Cornwall. Mineralogical Magazine, vol. 16, n° 73, 47-50.
Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Green, D.I., Hubbard, N., and Jewson, C. (1996) Stolzite from two Cornish localities. UK Journal of Mines & Minerals, 16, 14.


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