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A nice specimen of lustrous, silvery carrollite crystals on white calcite matrix from Kambove, Katanga, DRC. No damage.
This mineral may look like hematite at first glance. However Carrolite, Cu(Co,Ni)2S4 (Copper Cobalt Nickel Sulfide), is gray metallic Sulfide mineral containing a rich mixture of Copper, Cobalt and Nickel. It forms crystals, some very large, in hydrothermal veins. It a rare mineral, found recently in Africa and takes the shape striking octagonal crystals. These crystals are nestled amongst white calcite crystals.
Democratic Republic of the Congo
Kamoya Sud Mine, Kambove, Katanga
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