Chalcocite
North Wheal Basset, Wheal Basset, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
Cornwall's heyday in the 1800's saw the mining of many great minerals, including its famous chalcocites. This is a crystallized cluster of the classic, pseudo-hexagonal, tabular chalcocites. These thick, hexagonal 'pillows' reach 1.4 cm across, have good metallic luster, and some iridescence. Ex British Museum of Natural History and Kay Robertson ...
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