Wheal Brothers (Wheal Duchy), East Cornwall Silver Mines (St Vincent Great Consols; incl. Wheal Emily; Wheal Georgiana; Wheal Mercer), Wheal Langford (New Wheal Langford; Baring and Langford Mine), Calstock, Cornwall, England, UKi
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Latitude & Longitude (WGS84):
50° 30' 25'' North , 4° 16' 9'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SX391700
Type:
Mine (Abandoned) - last checked 2019
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Callington | 5,786 (2017) | 3.2km |
| Gunnislake | 4,044 (2017) | 4.4km |
| Calstock | 790 (2017) | 4.6km |
| Bere Alston | 2,164 (2018) | 6.2km |
| Lamerton | 859 (2018) | 9.1km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| British Micromount Society, Devon and Cornwall Branch Meetings | Liskeard, Cornwall | 15km |
Mindat Locality ID:
885
Long-form identifier:
mindat:1:2:885:6
GUID (UUID V4):
b09ca0eb-93bf-4d76-9d3f-11efd939d0db
Refs: Hamilton Jenkin XV 1969. Dines 1956.
Wheal Sisters was developed on the same lode to the east.
The mine was first opened about 1810 under the name of Wheal Duchy. When prospecting for copper ore, silver ore was found probable associated with a north-south crosscourse. The lode is recorded as being upto 31cms wide, and the silver ore upto 15cms wide. The silver lode was found in the adit level, from there it extended to a depth of 55 mts, and for a lenth in the lode of 5.5mts. The silver deposite consisted of native silver, pyrargyrite, acanthite, galena, siderite. (recordes also record grey and black sulphides of silver and antimony, without stating what they where).
Wheal Duchy was closed in 1816, but was reopend in 1833, and called Wheal Brothers. When the 30 fathom level was investigated a quantity of silver ore was found standing in the stopes. The previous owners had apparently not recognised it as silver ore. And within three months nearly 6000 uk pounds worth of silver ore had been produced. In 1874 the mine was being worked inconjuction with Silver Vally mine (which was at work in 1852 as well).
Recorded production:
Wheal Duchy
200 tons of silver ore
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
12 valid minerals.
Detailed Mineral List:
| β Acanthite Formula: Ag2S References: |
| β Arsenopyrite Formula: FeAsS |
| β Cassiterite Formula: SnO2 |
| β Chalcopyrite Formula: CuFeS2 |
| β Chlorargyrite Formula: AgCl References: |
| β 'Chlorite Group' |
| β Galena Formula: PbS |
| β Pyrargyrite Formula: Ag3SbS3 References: |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 |
| β Siderite Formula: FeCO3 |
| β Silver Formula: Ag References: |
| β Silver var. Antimonial Silver Formula: (Ag,Sb) |
| β Sphalerite Formula: ZnS References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Silver | 1.AA.05 | Ag |
| β | var. Antimonial Silver | 1.AA.05 | (Ag,Sb) |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Acanthite | 2.BA.35 | Ag2S |
| β | Sphalerite | 2.CB.05a | ZnS |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Galena | 2.CD.10 | PbS |
| β | Pyrite | 2.EB.05a | FeS2 |
| β | Arsenopyrite | 2.EB.20 | FeAsS |
| β | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| Group 3 - Halides | |||
| β | Chlorargyrite | 3.AA.15 | AgCl |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| β | Cassiterite | 4.DB.05 | SnO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Siderite | 5.AB.05 | FeCO3 |
| Unclassified | |||
| β | 'Chlorite Group' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | β Siderite | FeCO3 |
| O | Oxygen | |
| O | β Cassiterite | SnO2 |
| O | β Quartz | SiO2 |
| O | β Siderite | FeCO3 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Acanthite | Ag2S |
| S | β Arsenopyrite | FeAsS |
| S | β Chalcopyrite | CuFeS2 |
| S | β Galena | PbS |
| S | β Pyrargyrite | Ag3SbS3 |
| S | β Pyrite | FeS2 |
| S | β Sphalerite | ZnS |
| Cl | Chlorine | |
| Cl | β Chlorargyrite | AgCl |
| Fe | Iron | |
| Fe | β Arsenopyrite | FeAsS |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrite | FeS2 |
| Fe | β Siderite | FeCO3 |
| Cu | Copper | |
| Cu | β Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | β Sphalerite | ZnS |
| As | Arsenic | |
| As | β Arsenopyrite | FeAsS |
| Ag | Silver | |
| Ag | β Acanthite | Ag2S |
| Ag | β Silver var. Antimonial Silver | (Ag,Sb) |
| Ag | β Chlorargyrite | AgCl |
| Ag | β Pyrargyrite | Ag3SbS3 |
| Ag | β Silver | Ag |
| Sn | Tin | |
| Sn | β Cassiterite | SnO2 |
| Sb | Antimony | |
| Sb | β Silver var. Antimonial Silver | (Ag,Sb) |
| Sb | β Pyrargyrite | Ag3SbS3 |
| Pb | Lead | |
| Pb | β Galena | PbS |
Geochronology
| Geologic Time | Rocks, Minerals and Events | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | ||||||||||||||||||||||
| Paleozoic | ||||||||||||||||||||||
| Permian | ||||||||||||||||||||||
| Guadalupian |
| |||||||||||||||||||||
| Cisuralian |
| |||||||||||||||||||||
Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK
- England
- Callington and Tavistock Mining DistrictMining District
- Devon and Cornwall metalliferous mining districtMining District
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References
