

Democratic Republic of Congo
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Cobalto-Dolomie, Kakanda, Katanga, Dem. Rep. of Congo. Specimen 7x4,5x3cm covered on one side with bright pink crystals of cobalto-dolomite, in fact a variety of cobaltiferous dolomite with a few nodules of kolwezite, a hydroxy carbonate of copper and cobalt. Handwritten label coll. G.Gauthier