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Trevascus Mine (Trevaskus Mine; Trevaskis Mine), Carnhell Green, Gwinear-Gwithian, Cornwall, England, UKi
Regional Level Types
Trevascus Mine (Trevaskus Mine; Trevaskis Mine)Mine (Abandoned)
Carnhell GreenVillage
Gwinear-GwithianCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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PhotosMapsSearch
05754890017271996613211.jpg
Chalcedony

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
00458850017271996634664.jpg
Chalcedony

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
03680330017271996676449.jpg
Cassiterite

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
07339750017512306695346.jpg
Chalcedony

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
00458850017271996634664.jpg
Chalcedony

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
03680330017271996676449.jpg
Cassiterite

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
08488120017271996763284.jpg
Chalcedony

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
00458850017271996634664.jpg
Chalcedony

Trevascus Mine, Carnhell Green, Gwinear-Gwithian, Cornwall, England, UK
Latitude & Longitude (WGS84):
50° 11' 35'' North , 5° 20' 51'' West
Latitude & Longitude (decimal):
50.19312,-5.34756
GeoHash:
G#: gbujw36h0
GRN:
N34W03
UK National Grid Reference:
SW611380
Type:
Mine (Abandoned) - last checked 2020
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Leedstown267 (2017)3.7km
Camborne22,500 (2012)4.2km
Hayle8,210 (2017)5.4km
Uny Lelant1,056 (2017)6.7km
Four Lanes1,416 (2017)7.7km
Mindat Locality ID:
934
Long-form identifier:
mindat:1:2:934:1
GUID (UUID V4):
0


Worked from 1837 to 1842, producing 1,190 tons of 10% copper ore and 110 tons of black tin. A shaft and some overgrown burrows are located north of Trenoweth Farm, about 0.5 mile NW of Carnhell Green.

The mine is famous for the spectacular chalcedony specimens it produced.
These where recovered from the adit level around 1843.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


14 valid minerals.

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ 'Amphibole Supergroup var. Byssolite'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ 'Axinite Group'
ⓘ Beudantite
Formula: PbFe3+3(AsO4)(SO4)(OH)6
ⓘ Cassiterite
Formula: SnO2
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Fluorite
Formula: CaF2
ⓘ Galena
Formula: PbS
ⓘ Native Copper
Formula: Cu
ⓘ 'Petroleum var. Bitumen'
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Quartz var. Rock Crystal
Formula: SiO2
ⓘ Siderite
Formula: FeCO3
ⓘ Sphalerite
Formula: ZnS
ⓘ 'Tennantite Subgroup'
Formula: Cu6(Cu4C2+2)As4S12S
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘ'Tennantite Subgroup'2.GB.05Cu6(Cu4C2+2)As4S12S
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘvar. Rock Crystal4.DA.05SiO2
ⓘCassiterite4.DB.05SnO2
Group 5 - Nitrates and Carbonates
ⓘSiderite5.AB.05FeCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘBeudantite8.BL.05PbFe3+3(AsO4)(SO4)(OH)6
Group 9 - Silicates
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Chlorite Group'-
ⓘ'Petroleum
var. Bitumen'		-
ⓘ'Amphibole Supergroup
var. Byssolite'		-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Axinite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ BeudantitePbFe33+(AsO4)(SO4)(OH)6
Hⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ SideriteFeCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ BeudantitePbFe33+(AsO4)(SO4)(OH)6
Oⓘ CassiteriteSnO2
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ DolomiteCaMg(CO3)2
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
Oⓘ Quartz var. Rock CrystalSiO2
Oⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ FluoriteCaF2
Fⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ QuartzSiO2
Siⓘ Quartz var. Rock CrystalSiO2
Siⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ BeudantitePbFe33+(AsO4)(SO4)(OH)6
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ DolomiteCaMg(CO3)2
Caⓘ FluoriteCaF2
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ Amphibole Supergroup var. ByssoliteAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ ArsenopyriteFeAsS
Feⓘ BeudantitePbFe33+(AsO4)(SO4)(OH)6
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ Native CopperCu
Cuⓘ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ BeudantitePbFe33+(AsO4)(SO4)(OH)6
Asⓘ Tennantite SubgroupCu6(Cu4C22+)As4S12S
SnTin
Snⓘ CassiteriteSnO2
SbAntimony
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
PbLead
Pbⓘ BeudantitePbFe33+(AsO4)(SO4)(OH)6
Pbⓘ GalenaPbS

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

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.
Atkinson, Barry (1994) Mining Sites in Cornwall, Volume 2. Dyllansow Truran. 61 pp.
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