Cobaltocalcite, nr Kolwezi, Katanga, DRC
description: 2 1/2" ac. This is another of my best quality imports from the Congo that resulted from my visits there in late 2009. One could not ask for a more psychidelic color on a mineral specimen. Kolwezite (the murky green mineral on the periphery of this piece) is a rare carbonate of cobalt and copper. Unlike most Congo cobaltocalcite, this piece does not merely consist of a sugary pink coating on a rock. It displays sharp but intergrown crystals.
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