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2 samples matching your criteria
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Sample n°1763 : yellow ochrous material on amphiboliteMinerals: GOETHITE CHALCOPYRITE QUARTZYear:Country: Congo (RDC)
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Sample n°1764 : contact between pegmatite and manganese oxide occurrenceMinerals: MANGANESE OXIDES MUSCOVITEYear:Country: Congo (RDC)