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Silver Vein Mine (Beacon Hill Mine; Wheal Fortescue), Lostwithiel, Cornwall, England, UKi
Regional Level Types
Silver Vein Mine (Beacon Hill Mine; Wheal Fortescue)Mine
LostwithielCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 24' 23'' North , 4° 38' 30'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SX123597
Type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Lostwithiel2,659 (2017)2.0km
Lerryn308 (2017)3.0km
Luxulian388 (2017)7.5km
Par9,462 (2015)7.5km
Fowey2,131 (2017)7.8km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
British Micromount Society, Devon and Cornwall Branch MeetingsLiskeard, Cornwall14km
Mindat Locality ID:
1338
Long-form identifier:
mindat:1:2:1338:6
GUID (UUID V4):
0


Wheal Fortescue was first opened in 1855, when at a shallow depth muriate of silver (chlorargyrite) was found. At a depth of ony 3 fathoms the lode split, and the mine stoped in 1857. (Beacon Hill mine, may have been a local name)
In 1860 the mine reopened under the name of Silver Vein, when the mine was developed to a 50 fathom level. There was some small development on an east-west copper lode.
The silver occurred in the north-south lode. Probably in common with other such silver deposits in Cornwall, it may have been at the intersection of the two lodes.
Recorded output is scant:
3.5 tons of lead ore.
40 oz of silver (from lead ore)
61.25 tons of silver ore.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


11 valid minerals.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chlorargyrite
Formula: AgCl
ⓘ 'Freibergite Subgroup'
Formula: (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
ⓘ Galena
Formula: PbS
ⓘ Native Silver
Formula: Ag
ⓘ Pyrargyrite
Formula: Ag3SbS3
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Siderite
Formula: FeCO3
ⓘ Sphalerite
Formula: ZnS
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
ⓘPyrargyrite2.GA.05Ag3SbS3
ⓘ'Freibergite Subgroup'2.GB.05(Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 3 - Halides
ⓘChlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
Cⓘ SideriteFeCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
SiSilicon
Siⓘ QuartzSiO2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sⓘ GalenaPbS
Sⓘ PyrargyriteAg3SbS3
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ClChlorine
Clⓘ ChlorargyriteAgCl
CaCalcium
Caⓘ CalciteCaCO3
FeIron
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znⓘ SphaleriteZnS
AgSilver
Agⓘ ChlorargyriteAgCl
Agⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Agⓘ PyrargyriteAg3SbS3
Agⓘ Native SilverAg
SbAntimony
Sbⓘ Freibergite Subgroup(Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1
Sbⓘ PyrargyriteAg3SbS3
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
PbLead
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

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