Great Wheal Busy (Chacewater Mine), Chacewater, Cornwall, England, UK
|Latitude & Longitude (WGS84):||50° 15' 29'' North , 5° 10' 26'' West|
|Latitude & Longitude (decimal):||50.25806,-5.17389|
|UK National Grid Reference:||SW738447|
|Other regions containing this locality:||Devon and Cornwall metalliferous mining district, England, UK|
Great Wheal Busy was working a series of ENE-trending, flat dipping lodes hosted in metamorphosed killas. The sett is traversed by an elvan dyke, which was highly impregnated with sulphide ores in some places. The main ore bodies were those on Winter's lode and Chacewater lode, located in the hanging wall and footwall, respectively, of the elvan, and Hodge's lode, located in the footwall of Chacewater lode. They were worked from shafts arranged in two lines about 100 yards apart, which can still be identified in the field. Wheal Vor lode, south of the elvan, was worked from another group of shafts close to the Redruth-Chacewater road. The other lodes, on which only little work was done, are located north of the elvan and trend roughly parallel to it.
For some time, the mine was operated as Great Wheal Busy United Mine and included Hallenbeagle Mine, Great North Downs Mine, and other small mines in the area. It was already active in 1718, and was first worked for copper, but there are no records of its early production. From 1815 to 1870, it produced large quantities of copper, the bulk of which was raised before 1856 when the mine was 100 fms below Deep Adit level. In that year, the workings were sunk another 40 fms, and tin and copper ores were produced during the next ten years. In later years, it was worked mainly for arsenic. In the early 20th century, the dumps were worked over for arsenic and wolfram. Numerous shafts and spoil heaps are located in a large area north of the Redruth-Chacewater road. There are also remains of a calciner, some engine houses and a smithy.
12 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)|
Embrey, P.G., and Symes, R.F. (1987): Minerals of Cornwall and Devon. British Museum of Natural History (London), p. 51.