|Latitude & Longitude (WGS84):||50° 14' 16'' North , 5° 10' 28'' West|
|Latitude & Longitude (decimal):||50.23785,-5.17470|
|Other regions containing this locality:||Devon and Cornwall metalliferous mining district, England, UK|
|Köppen climate type:||Cfb : Temperate oceanic climate|
The name St Day United Mines was given to Poldice Mine and Carharrack Mine following an amalgamation in 1852.
In 1864, Wheal Unity, Wheal Gorland and Creegbrawse and Penkevil were added to this amalgamation. Subsequently in 1870 the group name was changed to Poldice Mines. Wheal Maid is also stated to have formed part of the group, probably as a result of working in conjunction with Carharrack Mine, which adjoins Wheal Maid's south-western boundary.
The initial name of the amalgamation is based upon the principal village in the area and has no relevance to the parish boundaries, hence most of the mines are located in Gwennap parish, except for Wheal Gorland (in St Day parish) and Creegbrawse and Penkevil Mine (in Chacewater parish).
Since the amalgamation between 1852-93 the outputs given under St Day United or Poldice Mines are: 22,900 tons of 6% copper ore, 3280 tons of black tin, 124 tons of mispickel (arsenic ore) and 49 tons of fluorspar.
Not to be mistaken for the Gwennap United Mines.
From a mineral location perspective, unless no other information is available, specimens should be assigned to the individual mines rather than the group designation.
Edited by Dale Foster
5 valid minerals.
|Geologic Time||Rocks, Minerals and Events|
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
382.7 - 393.3 Ma
|Middle Devonian (Undifferentiated)|