Very Rare Dark Metallic Gray Chalcostibite partially pseudomorphed by blue Azurite and Malachite in Rock Matrix
Dimensions (millimeters): 50 x 40 x 12
Dimensions (inches): 2 x 1.6 x .5
Chemical Formula – CuSbS2
Origins: Rar-el-Anz, Cherrat Wadi, Casablanca Prefecture, Grand Casablanca Region, Morocco, Africa
A friend was given exclusive rights to dig at this famous Moroccan location with one caveat - no power tools. I bought all he was willing to part with. A collector quality specimen of chalcostibite that have been partially replaced by bright blue azurite, a phenomenon peculiar to this locality near Casablanca. This is an unusually good crystal definition for this type of specimen. RARE!
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