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Poldice Mine, St Day United Mines (Poldice Mines), Gwennap, Cornwall, England, UKi
| Regional Level Types | |
|---|---|
| Poldice Mine | Mine (Abandoned) |
| St Day United Mines (Poldice Mines) | Group of Mines |
| Gwennap | Civil Parish |
| Cornwall | County |
| England | Constituent Country |
| UK | Country |
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Latitude & Longitude (WGS84):
50° 14' 32'' North , 5° 9' 56'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW743429
Type:
Mine (Abandoned) - last checked 2020
Kรถppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| St. Day | 700 (2011) | 1.4km |
| Chacewater | 1,226 (2017) | 1.7km |
| Redruth | 42,690 (2017) | 4.3km |
| Perranwell | 1,207 (2017) | 4.6km |
| Ponsanooth | 967 (2017) | 5.1km |
Poldice Mine is a former metalliferous mine located in Poldice Valley in southwest Cornwall. It is situated near the hamlet of Todpool, between the villages of Twelveheads and St Day, 3 miles (5 km) east of Redruth. The mine was extracting tin ore in 1748, but by 1788 the output of copper ore exceeded that of tin, and by the 1790s it was making a good profit. In the early 19th century the mine merged with neighbour Wheal Unity. The mine switched to arsenic extraction, although metals were still being mined in decreasing quantities, but by the 1910s most of the activity was over and although small-scale mining continued into the 1920s, it closed in 1930.
An extensive area of dumps around prominent remains of calciner, chimney, and buddles. Active in the 17th century. Closed 1913. Dumps processed 1924-1929. Produced over 150,000 tons copper ore, 1,500 tons tin and 2,500 tons arsenic.
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
19 valid minerals.
Detailed Mineral List:
| โ Anatase Formula: TiO2 |
| โ Arsenopyrite Formula: FeAsS |
| โ Brookite Formula: TiO2 |
| โ Cassiterite Formula: SnO2 |
| โ Chalcopyrite Formula: CuFeS2 |
| โ 'Chlorite Group' |
| โ Erythrite Formula: Co3(AsO4)2 · 8H2O References: |
| โ Fluorite Formula: CaF2 |
| โ Galena Formula: PbS References: |
| โ Gypsum Formula: CaSO4 · 2H2O |
| โ Molybdenite Formula: MoS2 References: |
| โ Muscovite Formula: KAl2(AlSi3O10)(OH)2 References: |
| โ Native Copper Formula: Cu |
| โ Native Sulphur ? Formula: S8 |
| โ 'Petroleum' |
| โ 'Petroleum var. Bitumen' |
| โ Pyrite Formula: FeS2 |
| โ Quartz Formula: SiO2 |
| โ Siderite Formula: FeCO3 |
| โ Spangolite Formula: Cu6Al(SO4)(OH)12Cl · 3H2O |
| โ Sphalerite Formula: ZnS |
| โ 'Tetrahedrite Subgroup' Formula: Cu6(Cu4C2+2)Sb4S12S |
| โ Titanite Formula: CaTi(SiO4)O References: |
| โ 'Tourmaline' Formula: AD3G6(T6O18)(BO3)3X3Z |
| โ 'Tungstic Ochre' |
| โ 'Wolframite Group' References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| โ | Native Copper | 1.AA.05 | Cu |
| โ | Native Sulphur ? | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| โ | Sphalerite | 2.CB.05a | ZnS |
| โ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| โ | Galena | 2.CD.10 | PbS |
| โ | Molybdenite | 2.EA.30 | MoS2 |
| โ | Pyrite | 2.EB.05a | FeS2 |
| โ | Arsenopyrite | 2.EB.20 | FeAsS |
| โ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 3 - Halides | |||
| โ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| โ | Quartz | 4.DA.05 | SiO2 |
| โ | Cassiterite | 4.DB.05 | SnO2 |
| โ | 'Wolframite Group' | 4.DB.30 va | |
| โ | Anatase | 4.DD.05 | TiO2 |
| โ | Brookite | 4.DD.10 | TiO2 |
| Group 5 - Nitrates and Carbonates | |||
| โ | Siderite | 5.AB.05 | FeCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| โ | Gypsum | 7.CD.40 | CaSO4 ยท 2H2O |
| โ | Spangolite | 7.DD.15 | Cu6Al(SO4)(OH)12Cl ยท 3H2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| โ | Erythrite | 8.CE.40 | Co3(AsO4)2 ยท 8H2O |
| Group 9 - Silicates | |||
| โ | Titanite | 9.AG.15 | CaTi(SiO4)O |
| โ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| Unclassified | |||
| โ | 'Chlorite Group' | - | |
| โ | 'Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| โ | 'Tungstic Ochre' | - | |
| โ | 'Petroleum var. Bitumen' | - | |
| โ | '' | - | |
List of minerals for each chemical element
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
- Camborne-Redruth and St Day Mining DistrictMining District
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Poldice Mine, St Day United Mines, Gwennap, Cornwall, England, UK