UK Grid Reference: SX911977
Latitude: 50°46'5"N
Longitude: 3°32'40"W
"In the South-West of England the main producer of manganese ore was initially the mine at Upton Pyne which commenced production in 1770, although the deposits there were gradually worked out and the mine closed in 1823".
Regarding the presence of rhodonite here, Sir Arthur Russell notes that whilst "R. P. Grog and W. G. Lettsom (1858) give this mine as a locality for rhodonite. No specimens of the mineral from here are known to me, neither have I been able to find any at the old workings".
Locally known as the Black Pit, the small Upton Pyne pond is the location of the abandoned eighteenth-century workings.
References
Manganese mining In Doddiscombsleigh, Andrew Westcott (
http://myweb.tiscali.co.uk/andyspatch/manganese.htm) [Link dead. Jul 2011]
On rhodonite and tephroite from Treburland manganese mine,
Altarnun, Cornwall; and on rhodonite from other localities in
Cornwall and Devonshire, Arthur Russell, read March 1944. (
http://209.85.229.132/search?q=cache:WmvIWs_NCNkJ:www.minersoc.org/pages/Archive-MM/Volume_27/27-194-221.pdf+Upton+Pyne+Manganese&cd=10&hl=en&ct=clnk)Mineral List
4 entries listed. 3 valid minerals.
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