BayldoniteWheal Carpenter, Fraddam, Gwinear, St Erth - Gwithian Area, Cornwall, England, UK
Photo: Steve Rust UK Grid Reference: SW586353
Latitude: 50°10'4"N
Longitude: 5°22'50"W
A small mine which has a recorded history starting in 1792-1798. The next recorded working was from the early 1800's to 1818. And again from 1850 to 1855. The mine is known to have produced copper, tin and silver ores. But the only recorded output is 1230 tons of copper ore. The silver ore was in the form of capillary
native silver. Engine (Red) lode (east-west) is intersected by a cross-course lode (north-south), this is where the silver may have come from. Silver mineralisation associated with the north-south cross-course faulting, is not unknown in Cornwall.
The site was largely destroyed about 20-30 years ago.
Copper Production |
| Copper | Ore(tons) | Metal(tons) | Value(£) |
|---|
| 1854 | 488.00 | 16.60 | 1444.40 |
|---|
| 1855 | 212.00 | 8.30 | 745.00 |
|---|
|
Data for period 1854-1855 from "Cornish Mines, University of Exeter (1987)"
Specimens of adamite in the Natural History Museum, London supposedly collected here 1953-55 by Arthur Kinsbury (1906-68) are now considered "implausable" and probably from Lavrion. This is one of a number of likely or definitely falsified Kingsbury localities.
References
- Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, p. 167.
- Claringbull, G.F., Hey, M.H., and Davis, R.J. (1959): Cornubite, a new mineral dimorphous with cornwallite. Mineralogical Magazine 32, 1–5.
- Ryback, G., Hart, A.D., and Stanley, C.J. (2001): Journal of the Russell Society 7(2)
Mineral List
19 entries listed. 18 valid minerals. 1 type locality (valid mineral).
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