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          Shinkolobwe, Democratic of Republic
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Fourmarierite and Masuyite, Shinkolobwe, Katanga, Dem. Rep. of Congo. Specimen 3,2x2,6x2cm with two rare minerals in microcrystals. Handwritten label by Gilbert Gauthier, Fourmarierite is a lead uranate and Masuyite a lead hydroxy uranate. Radioactive mineral