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New Terras Mine (Terras Mine), St Stephen, St Stephen-in-Brannel, Cornwall, England, UKi
| Regional Level Types | |
|---|---|
| New Terras Mine (Terras Mine) | Mine |
| St Stephen | Administrative Community |
| St Stephen-in-Brannel | Civil Parish |
| Cornwall | County |
| England | Constituent Country |
| UK | Country |
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Latitude & Longitude (WGS84):
50° 20' 14'' North , 4° 54' 19'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW934527
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Saint Stephen | 2,252 (2015) | 0.9km |
| Grampound | 537 (2017) | 4.3km |
| Nanpean | 2,563 (2017) | 4.3km |
| Saint Dennis | 2,206 (2016) | 5.3km |
| Probus | 1,906 (2017) | 6.1km |
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 | 34km |
A small tin mine in an elvan dyke, which was first worked from 1870 until 1873 and reworked under the name New Terras Mine between 1884 and 1890. The workings consist of an open cut southeast of the road leading from St Stephen to Terras farm and a shaft in the fields northwest of it, which is believed to have been sunk in search of the elvan. The grid reference marks the open cut which is now heavily overgrown.
The mine sold 90 tons of tin concentrate between 1870 and 1873 and raised another 41 tons of black tin between 1884 and 1890. Several iron and copper arsenates have been reported from the greenstones that host the elvan.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Olivenite Formula: Cu2(AsO4)(OH) |
| ⓘ Pharmacosiderite Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O |
| ⓘ Scorodite Formula: Fe3+AsO4 · 2H2O |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Olivenite | 8.BB.30 | Cu2(AsO4)(OH) |
| ⓘ | Scorodite | 8.CD.10 | Fe3+AsO4 · 2H2O |
| ⓘ | Pharmacosiderite | 8.DK.10 | KFe3+4(AsO4)3(OH)4 · 6-7H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Olivenite | Cu2(AsO4)(OH) |
| H | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| H | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| O | Oxygen | |
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Olivenite | Cu2(AsO4)(OH) |
| O | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| O | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| K | Potassium | |
| K | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| Fe | Iron | |
| Fe | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| Fe | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Cu | Copper | |
| Cu | ⓘ Olivenite | Cu2(AsO4)(OH) |
| As | Arsenic | |
| As | ⓘ Olivenite | Cu2(AsO4)(OH) |
| As | ⓘ Pharmacosiderite | KFe43+(AsO4)3(OH)4 · 6-7H2O |
| As | ⓘ Scorodite | Fe3+AsO4 · 2H2O |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
Geochronology
| Geologic Time | Rocks, Minerals and Events | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | ||||||||||||||||||||||
| Paleozoic | ||||||||||||||||||||||
| Permian | ||||||||||||||||||||||
| Guadalupian |
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| Cisuralian |
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Other Regions, Features and Areas containing this locality
British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
- Rheno-Hercynian BeltOrogenic Belt
EuropeContinent
UK
- England
- Cornubian mining districtMining District
- Cornwall
- St Austell Mining DistrictMining District
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