|Latitude & Longitude (WGS84):||50° 14' 0'' North , 5° 13' 21'' West|
|Latitude & Longitude (decimal):||50.23333,-5.22250|
|UK National Grid Reference:||SW702421|
|Other regions containing this locality:||Devon and Cornwall metalliferous mining district, England, UK|
This mine was already active in the early 18th century, and was operated intermittently until 1891. It worked a number of ENE-trending lodes in metamorphosed killas overlying the west flank of the Carn Marth granite. The workings are located under Redruth town; the shafts are built over and most of the many small mines that were included in its sett cannot be identified today. Coordinates given are those of the stepped chimney near Engine and Sump shafts, which was erected around 1824.
The lodes are intersected by two NW-trending cross-courses, about 100 fms apart. The western cross-course, which is said to carry cobalt ores, has been traced southwards to Wheal Sparnon. The eastern cross-course (or, Braggs cross-course) presumably carries uranium ores.
During its last working period, from 1854 to 1891, the mine produced 1,090 tons of 5.5% copper ore, 7,700 tons of black tin, and, together with Wheal Sparnon, 974 tons of arsenic. It was by far the largest tin producer in the area.
Mineral ListMineral list contains entries from the region specified including sub-localities
17 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
358.9 - 382.7 Ma
|Upper Devonian Rocks (Undifferentiated)|
Localities in this Region
- Embrey & Symes (1987): Minerals of Cornwall and Devon, p. 104.