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Treskerby and Chance United Mine (incl. Treskerby Mine; Wheal Chance), Redruth, Cornwall, England, UKi
| Regional Level Types | |
|---|---|
| Treskerby and Chance United Mine (incl. Treskerby Mine; Wheal Chance) | Mine (Abandoned) |
| Redruth | Civil Parish |
| Cornwall | County |
| England | Constituent Country |
| UK | Country |
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Latitude & Longitude (WGS84):
50° 14' 57'' North , 5° 12' 15'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW716438
Type:
Mine (Abandoned) - last checked 2023
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| St. Day | 700 (2011) | 1.7km |
| Redruth | 42,690 (2017) | 2.3km |
| North Country | 773 (2017) | 2.3km |
| Chacewater | 1,226 (2017) | 3.4km |
| Mount Hawke | 1,511 (2017) | 3.7km |
This mine was formed in 1828 by amalgamation of Treskerby Mine and Wheal Chance. Both mines were working lodes in metamorphosed killas overlying the northern flank of the Carn Marth granite. The Treskerby sett adjoins the eastern boundary of Wheal Boys, marked by the County Crosscourse, which also defines the boundaries of the mines further north. To the east, it is adjoined by Wheal Chance. The shafts and workings were located on both sides of the Redruth-Truro road, but much of this area is now built over. To the south, the sett once extended 900 yards SE of Treskerby village, and for some time also included the Park-an-Chy Mine. Some dumps are located in woodland south of the Redruth-Turo road.
The mines were already active in 1800, and were abandoned a couple of years after their amalgamation. In 1860, the property was re-opened and partially dewatered. From 1815 to 1832, 47,545 tons of 9.5% copper ore were produced. During that period, the Treskerby section also raised 9 tons of black tin. Another 18,500 tons of 9% copper ore were produced from 1922 to 1927. Due to wolframite-bearing ore having been found in the dumps of Treskerby Mine, prospection works were carried out in 1938, but the source of the tungsten ore was not encountered.
The dumps have now largely been reclaimed and an active tree planing scheme is evidently in operation. Pieces of chalcopyrite-pyrite-arsenopyrite bearing rock may be found but the minerals appear as scanty grains or strings. Pale green flourite is common but only as rock forming material. White opal / semi-opal is also quite common, but again is only of poor rock forming quality. The stack at the end of the arsenic flue is in good condition though the calciner is crumbling and the flue is being reclaimed by the undergrowth. - April 2023.
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
9 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite Formula: FeAsS References: |
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Cuprite Formula: Cu2O References: |
| ⓘ Fluorite Formula: CaF2 References: |
| ⓘ Native Copper Formula: Cu References: |
| ⓘ Opal Formula: SiO2 · nH2O |
| ⓘ 'Petroleum' References: |
| ⓘ 'Petroleum var. Bitumen' References: |
| ⓘ Pyrite Formula: FeS2 References: |
| ⓘ Quartz Formula: SiO2 |
| ⓘ 'Wolframite Group' |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Copper | 1.AA.05 | Cu |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 3 - Halides | |||
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cuprite | 4.AA.10 | Cu2O |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Opal | 4.DA.10 | SiO2 · nH2O |
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| ⓘ | 'Wolframite Group' | 4.DB.30 va | |
| Unclassified | |||
| ⓘ | 'Petroleum var. Bitumen' | - | |
| ⓘ | '' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Opal | SiO2 · nH2O |
| O | Oxygen | |
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Cuprite | Cu2O |
| O | ⓘ Opal | SiO2 · nH2O |
| O | ⓘ Quartz | SiO2 |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| Si | Silicon | |
| Si | ⓘ Opal | SiO2 · nH2O |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Fluorite | CaF2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Cuprite | Cu2O |
| Cu | ⓘ Native Copper | Cu |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
Geochronology
| Geologic Time | Rocks, Minerals and Events | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | ||||||||||||||||||||||
| Paleozoic | ||||||||||||||||||||||
| Permian | ||||||||||||||||||||||
| Guadalupian |
| |||||||||||||||||||||
| 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
- Cornwall
- Camborne-Redruth and St Day Mining DistrictMining District
- Devon and Cornwall metalliferous mining districtMining District
- Cornwall
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Treskerby and Chance United Mine, Redruth, Cornwall, England, UK