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Carrollite: Cu(Co,Ni)2S4
Comments: Polished Section (PPL) image of corroded remnants of early, Ni-carrollite (grey-carr) in the core of a large pyrite (py) atoll structure wtth brown bornite and golden chalcopyrite. Location: Giant Kidd Creek Volcanogenic Massive Sulfide deposit, Western Abitibi Subprovince, Timmins, Ontario, Canada. Scale: F.V.= 2 mm. © National Resouces of Canada
Comments: Carrollite crystal with minor attached matrix. Location: Komoto-Frond in the Democratic Republic of the Congo. Scale: 1.2 cm. © John Veevaert