Castle-an-Dinas Mine, Castle-an-Dinas, St Columb Major, St Austell District, Cornwall, England, UK
|Latitude & Longitude (WGS84):||50° 25' 26'' North , 4° 53' 30'' West|
|Latitude & Longitude (decimal):||50.42389,-4.89194|
|UK National Grid Reference:||SW946623|
|Other regions containing this locality:||Devon and Cornwall metalliferous mining district, England, UK|
|Köppen climate type:||Cfb : Temperate oceanic climate|
A N_S vertical wolfram lode crossing Castle-an-Dinas Hill and running through the centre of the hillfort of that name. There is a cluster of buildings at South Shaft (sunk in 1945 to 650ft) and open stopes and 4 levels in the north side of the hill. There is a granite cupola in the core of the hill and the ore dies out where it enters this rock.
The mine operated during the First and Second World Wars on a limited scale but the main period of working was 1945-58 when about 3,000 tons wolfram were produced.
18 valid minerals. 1 (TL) - type locality of 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
323.2 - 358.9 Ma
|Paleozoic sedimentary rocks|
Age: Mississippian (323.2 - 358.9 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
393.3 - 419.2 Ma
|Lower Devonian Rocks (Undifferentiated)|
393.3 - 419.2 Ma
|Early Devonian sandstone|