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South Crofty Tin Project (South Crofty Mine; South Wheal Crofty), Pool, Carn Brea, Cornwall, England, UK

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This section contains information provided by the site operator.

Strongbow Exploration Inc.



WORKING TOWARDS A “CLEAN TIN” SUPPLY FOR THE HIGH TECH WORLD

Our flagship project is the past producing South Crofty underground tin mine in Cornwall, UK. With a mining licence (valid to 2071), planning permission to construct a new surface process plant and water discharge permit in place, the project is fully permitted. The project further benefits from numerous shafts preserved for future mining activity, a high-grade NI 43-101 Mineral Resource Estimate, and a strongly supportive local community that has a long history of mining.

The predominant uses for tin today are in the high tech world, as lead-free solder in circuit boards and in various forms of batteries. Companies using tin are coming under increasing scrutiny to demonstrate that the materials they use are not supporting conflict, do not contribute to environmental damage, and / or exploit children in the workforce.

Strongbow is well positioned to capitalise on the demand for “CLEAN TIN”

Links



Corporate Website

The South Crofty Tin Project

Code of Business Conduct and Ethics (download)


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Latitude & Longitude (WGS84): 50° 13' 22'' North , 5° 16' 28'' West
Latitude & Longitude (decimal): 50.22297,-5.27456
GeoHash:G#: gbujxyz1v
UK National Grid Reference:SW667413
Other regions containing this locality:Camborne-Redruth and St Day Mining District, Cornwall, England, UK
Devon and Cornwall metalliferous mining district, England, UK
Locality type:Project
Köppen climate type:Cfb : Temperate oceanic climate


The past producing South Crofty mine began life as a small sett called Penhellick Vean in the 1590s, but absorbed smaller mines around it, becoming South Wheal Crofty in 1854.

Initially a shallow tin mine and then a copper mine, the mine workings went back into the deep tin zone from the 1860s onwards, when copper production began to decline.

In 1906 South Crofty Mine Ltd became the foundation of the modern mine. From the 1890s the mine acquired other setts as the surrounding mines closed. These included New Cook's Kitchen, Tincroft & Carn Brea, North Roskear, South Roskear, and Dolcoath Mine in 1930, to become a huge enterprise nearly 4.5 km in length.

Workings are 731 meters deep and feature 2 shafts: Robinson's man riding shaft at 682 meters & Cook's shaft at 731 meters.

Robinsons Shaft was abandoned in the early 1990's as it was becoming dangerous. All man riding and ore hoisting was then transferred to New Cooks Kitchen shaft. Roskear Shaft was then reconditioned and fitted with a new headframe and winder to serve for emergency egress purposes.

An extensive history of the mine is given in J.A. Buckley's "A History of South Crofty Mine".


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


37 valid minerals.

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:

Albite
Formula: Na(AlSi3O8)
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Anatase
Formula: TiO2
Reference: No reference listed
'Apatite'
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Arsenopyrite
Formula: FeAsS
Reference: Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Dines, H.G. (1956) The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Bertrandite
Formula: Be4(Si2O7)(OH)2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Beryl
Formula: Be3Al2(Si6O18)
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
'Biotite'
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Bismuth
Formula: Bi
Reference: Mineralogical Magazine 1965 34 : 159-176.
Bismuthinite
Formula: Bi2S3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Bismutite
Formula: (BiO)2CO3
Reference: [UKJMM 15:18]
'Bitumen'
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Calcite
Formula: CaCO3
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Cassiterite
Formula: SnO2
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906) The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Dines, H.G. (1956) The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326; Darnley, A.G., English, T.H., Sprake, O., Preece, E.R., and Avery, D. (1965) Ages of uraninite and coffinite from South-West England. Mineralogical Magazine, vol. 34, n° 268, 159-176.
Chalcocite
Formula: Cu2S
Reference: No reference listed
Chalcopyrite
Formula: CuFeS2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Chamosite var: Daphnite
Formula: (Fe,Mg)5Al(Si,Al)4O10(OH)8
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
'Chlorite Group'
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906) The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Coffinite
Formula: U(SiO4) · nH2O
Reference: Mineralogical Magazine 1965 34 : 159-176.
Cuprite
Formula: Cu2O
Reference: No reference listed
Dolomite
Formula: CaMg(CO3)2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Enargite
Formula: Cu3AsS4
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Fluorite
Formula: CaF2
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906) The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Golley, P. and Williams, R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
Galena
Formula: PbS
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.; Mineralogical Magazine 34, 159-176 (1965)
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Dale Foster Collection
'Granite'
Reference: Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Hematite
Formula: Fe2O3
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
'K Feldspar'
Reference: Ken Honking Collection.
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Description: A specimen of quartz with cassiterite show an association with pink adularia. Specimen is from the " complex lode ".
Reference: Ken Honking Collection.
'Killas'
Reference: Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326
Marcasite
Formula: FeS2
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Marcasite var: Lonchidite
Formula: Fe(S,As)2
Reference: No reference listed
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Monazite-(Ce)
Formula: Ce(PO4)
Reference: Steve Rust collection, Via Chris Jewson Collection
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Orthoclase
Formula: K(AlSi3O8)
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Phenakite
Formula: Be2SiO4
Reference: Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Golley and Williams (1995) Cornish Mineral Reference Manual.
Pyrite
Formula: FeS2
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326; Mineralogical Magazine 34, 159-176 (1965)
Quartz
Formula: SiO2
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906) The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.; Dines, H.G. (1956) The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Quartz var: Milky Quartz
Formula: SiO2
Scheelite
Formula: Ca(WO4)
Reference: [UKJMM 19:5]
Scorodite
Formula: Fe3+AsO4 · 2H2O
Reference: No reference listed
Siderite
Formula: FeCO3
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Sphalerite
Formula: ZnS
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326
Stannite
Formula: Cu2FeSnS4
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.
Talc
Formula: Mg3Si4O10(OH)2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
'commodity:Tin'
Formula: Sn
Reference:  
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
'Tungstic Ochre'
Reference: [Golley & Williams, 1995, 63 - "Cornish Mineral Reference Manual"]
Uraninite
Formula: UO2
Reference: Mineralogical Magazine 1965 34 : 159-176.
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Bismuth'1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
'Arsenopyrite'2.EB.20FeAsS
'Bismuthinite'2.DB.05Bi2S3
'Chalcocite'2.BA.05Cu2S
'Chalcopyrite'2.CB.10aCuFeS2
Enargite2.KA.05Cu3AsS4
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
var: Lonchidite2.EB.10aFe(S,As)2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Stannite2.CB.15aCu2FeSnS4
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
'Anatase'4.DD.05TiO2
'Cassiterite'4.DB.05SnO2
'Cuprite'4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Milky Quartz4.DA.05SiO2
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
'Bismutite'5.BE.25(BiO)2CO3
'Calcite'5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Melanterite7.CB.35Fe2+(H2O)6SO4 · H2O
Scheelite7.GA.05Ca(WO4)
Group 8 - Phosphates, Arsenates and Vanadates
Monazite-(Ce)8.AD.50Ce(PO4)
Scorodite8.CD.10Fe3+AsO4 · 2H2O
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
'Bertrandite'9.BD.05Be4(Si2O7)(OH)2
'Beryl'9.CJ.05Be3Al2(Si6O18)
'Chamosite'9.EC.55(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
var: Daphnite9.EC.55(Fe,Mg)5Al(Si,Al)4O10(OH)8
'Coffinite'9.AD.30U(SiO4) · nH2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Orthoclase9.FA.30K(AlSi3O8)
Phenakite9.AA.05Be2SiO4
Talc9.EC.05Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Bitumen'-
'Chlorite Group'-
Garnet Group-X3Z2(SiO4)3
Granite-
K Feldspar-
'var: Adularia'-KAlSi3O8
Killas-
Limonite-(Fe,O,OH,H2O)
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z
Tungstic Ochre-
Wolframite-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Stannite2.9.2.1Cu2FeSnS4
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 4
Enargite3.2.1.1Cu3AsS4
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
AX2
Anatase4.4.4.1TiO2
Cassiterite4.4.1.5SnO2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Melanterite29.6.10.1Fe2+(H2O)6SO4 · H2O
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
AXO4
Monazite-(Ce)38.4.3.1Ce(PO4)
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Scorodite40.4.1.3Fe3+AsO4 · 2H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Phenakite51.1.1.1Be2SiO4
Insular SiO4 Groups Only with cations in >[6] coordination
Coffinite51.5.2.4U(SiO4) · nH2O
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
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Chamosite71.4.1.7(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
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
Albite76.1.3.1Na(AlSi3O8)
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Bitumen'-
Chamosite
var: Daphnite
-(Fe,Mg)5Al(Si,Al)4O10(OH)8
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
'Granite'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8
Kaolinite-Al2(Si2O5)(OH)4
'Killas'-
'Limonite'-(Fe,O,OH,H2O)
Marcasite
var: Lonchidite
-Fe(S,As)2
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Quartz
var: Milky Quartz
-SiO2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
'Tungstic Ochre'-
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H BertranditeBe4(Si2O7)(OH)2
H Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
H CoffiniteU(SiO4) · nH2O
H Chamosite (var: Daphnite)(Fe,Mg)5Al(Si,Al)4O10(OH)8
H GypsumCaSO4 · 2H2O
H KaoliniteAl2(Si2O5)(OH)4
H Limonite(Fe,O,OH,H2O)
H MelanteriteFe2+(H2O)6SO4 · H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H ScoroditeFe3+AsO4 · 2H2O
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H TalcMg3Si4O10(OH)2
BeBeryllium
Be BertranditeBe4(Si2O7)(OH)2
Be BerylBe3Al2(Si6O18)
Be PhenakiteBe2SiO4
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C Bismutite(BiO)2CO3
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C SideriteFeCO3
OOxygen
O K Feldspar (var: Adularia)KAlSi3O8
O AlbiteNa(AlSi3O8)
O AnataseTiO2
O BertranditeBe4(Si2O7)(OH)2
O BerylBe3Al2(Si6O18)
O Bismutite(BiO)2CO3
O CalciteCaCO3
O CassiteriteSnO2
O Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
O CoffiniteU(SiO4) · nH2O
O CupriteCu2O
O Chamosite (var: Daphnite)(Fe,Mg)5Al(Si,Al)4O10(OH)8
O DolomiteCaMg(CO3)2
O Garnet GroupX3Z2(SiO4)3
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O Limonite(Fe,O,OH,H2O)
O MelanteriteFe2+(H2O)6SO4 · H2O
O Quartz (var: Milky Quartz)SiO2
O Monazite-(Ce)Ce(PO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O OrthoclaseK(AlSi3O8)
O PhenakiteBe2SiO4
O QuartzSiO2
O ScheeliteCa(WO4)
O ScoroditeFe3+AsO4 · 2H2O
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O SideriteFeCO3
O TalcMg3Si4O10(OH)2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O UraniniteUO2
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
FFluorine
F FluoriteCaF2
NaSodium
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Mg Chamosite (var: Daphnite)(Fe,Mg)5Al(Si,Al)4O10(OH)8
Mg DolomiteCaMg(CO3)2
Mg TalcMg3Si4O10(OH)2
AlAluminium
Al K Feldspar (var: Adularia)KAlSi3O8
Al AlbiteNa(AlSi3O8)
Al BerylBe3Al2(Si6O18)
Al Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Al Chamosite (var: Daphnite)(Fe,Mg)5Al(Si,Al)4O10(OH)8
Al KaoliniteAl2(Si2O5)(OH)4
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al OrthoclaseK(AlSi3O8)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
SiSilicon
Si K Feldspar (var: Adularia)KAlSi3O8
Si AlbiteNa(AlSi3O8)
Si BertranditeBe4(Si2O7)(OH)2
Si BerylBe3Al2(Si6O18)
Si Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Si CoffiniteU(SiO4) · nH2O
Si Chamosite (var: Daphnite)(Fe,Mg)5Al(Si,Al)4O10(OH)8
Si Garnet GroupX3Z2(SiO4)3
Si KaoliniteAl2(Si2O5)(OH)4
Si Quartz (var: Milky Quartz)SiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OrthoclaseK(AlSi3O8)
Si PhenakiteBe2SiO4
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si TalcMg3Si4O10(OH)2
PPhosphorus
P Monazite-(Ce)Ce(PO4)
SSulfur
S ArsenopyriteFeAsS
S BismuthiniteBi2S3
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S EnargiteCu3AsS4
S GalenaPbS
S GypsumCaSO4 · 2H2O
S Marcasite (var: Lonchidite)Fe(S,As)2
S MarcasiteFeS2
S MelanteriteFe2+(H2O)6SO4 · H2O
S PyriteFeS2
S SphaleriteZnS
S StanniteCu2FeSnS4
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca FluoriteCaF2
Ca GypsumCaSO4 · 2H2O
Ca ScheeliteCa(WO4)
TiTitanium
Ti AnataseTiO2
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Fe Chamosite (var: Daphnite)(Fe,Mg)5Al(Si,Al)4O10(OH)8
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe Marcasite (var: Lonchidite)Fe(S,As)2
Fe MarcasiteFeS2
Fe MelanteriteFe2+(H2O)6SO4 · H2O
Fe PyriteFeS2
Fe ScoroditeFe3+AsO4 · 2H2O
Fe SideriteFeCO3
Fe StanniteCu2FeSnS4
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
CuCopper
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu CupriteCu2O
Cu EnargiteCu3AsS4
Cu StanniteCu2FeSnS4
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As EnargiteCu3AsS4
As Marcasite (var: Lonchidite)Fe(S,As)2
As ScoroditeFe3+AsO4 · 2H2O
SnTin
Sn CassiteriteSnO2
Sn StanniteCu2FeSnS4
CeCerium
Ce Monazite-(Ce)Ce(PO4)
WTungsten
W ScheeliteCa(WO4)
W Wolframite(Fe2+)WO4 to (Mn2+)WO4
PbLead
Pb GalenaPbS
BiBismuth
Bi BismuthBi
Bi BismuthiniteBi2S3
Bi Bismutite(BiO)2CO3
UUranium
U CoffiniteU(SiO4) · nH2O
U UraniniteUO2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Russell, A. (1911) On the occurrence of phenacite in Cornwall. Mineralogical Magazine, vol. 16, n° 73, 55-62.
Bureau of Mines Mineral Trade Notes (Jun 20, 1947).
Dines, H.G. (1956) The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 317-326.
Taylor R.G. and Hosking K.F.G. (1970) Manganese-Iron Ratios in Wolframite, South Crofty Mine, Cornwall; Economic Geology, v. 65, pp. 47-53
Mining Annual Review (1985) 35: 485.
Rocks & Minerals: 22: 1030.

Documents

Title (click to view)YearAuthor
Technical Report for South Crofty2017Strongbow Exploration Inc
Technical Report for South Crofty2016Strongbow Exploration Inc

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