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South Polgooth Mine (Wheal Davey; incl. New Hewas Mine), Little Polgooth, St Ewe, St Austell District, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 18' 50'' North , 4° 49' 24'' West
Latitude & Longitude (decimal): 50.31389,-4.82333
UK National Grid Reference:SW990499
Other regions containing this locality:Devon and Cornwall metalliferous mining district, England, UK


South Polgooth, whose records date back to the 16th century, lies in St. Ewe parish, about two miles southwest of St. Austell. An engine house was built in 1880 to house a combined pumping and stamping engine and still stands.

An ancient but relatively small mine, South Polgooth includes Treloweth Mine and New Hewas Mine. It worked three main lodes: Hewas Lode, North Lode and Caunter Lode from Engine (Main) Shaft, Baldu Shaft and Treloweth Shaft. As historians have reported, the mine was '... never a great producer of tin' and '... although South Polgooth has worked several times, it has had little or no success'.

The South Polgooth lodes carried tin, a little copper and some arsenic. Caunter Lode also returned a little wolfram. There are also reports of Sphalerite being discovered on the sett. South Polgooth was not worked in 1886, 1892, 1894-95 and 1905-08. The mine re-opened briefly in 1916, but very little work was carried out underground. Hewas Lode was prospected at the 10 fathom (60 feet) level, with Caunter and North Lodes investigated at the 20 fathom level. Some arsenic was reported.

South Polgooth closed in 1918.

Records of production are: 115 tons of black tin between 1837 and 1839 and between 1880 and 1882. With Treloweth Mine in 1896-99 about 34 tons were raised, As Treloweth alone between 1900 and 1910, 10 tons of black tin were raised.

Mineral List

Mineral list contains entries from the region specified including sub-localities

5 valid minerals.

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

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Early Devonian
393.3 - 419.2 Ma
Lower Devonian Rocks (Undifferentiated)

Age: Early Devonian (393.3 - 419.2 Ma)

Lithology: Mudstone, siltstone and sandstone

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Localities in this Region

UK
  • England
    • Cornwall
      • St Austell District
        • St Ewe
          • Little Polgooth
            • South Polgooth Mine (Wheal Davey; incl. New Hewas Mine)

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, pp. 550-551 (see also corrigenda in the 1994 reprint).

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