Matlockite
Cromford, Derbyshire Dales District, Derbyshire, England, UK
A superb and large matlockite crystal by any standard. This thumbnail consists of robust yellowish, lustrous, translucent, bladed crystals of matlockite, a very rare lead fluorochloride, to 1.5 cm in tight subparallel growth. An exceptional specimen with large crystals for the species. An historic Hugh A. Ford labels comes with this great piece. ...
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