This rich miniature Native Copper is from the Osarizawa mine in northern Japan, famous for the lead aluminium copper sulphate hydroxide species of the same name. This copper mine operated from 1936-1965 but specimens of Native Copper from there are rarely seen for sale. This one shows tarnished hackly Native Copper with some red Cuprite as veinlets and occasional well-formed microcrystals within white rocky matrix. Ex David Hardman collection, no. 1423.

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Crystal Classics

Tucson, Arizona, USA