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3 samples matching your criteria
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Sample n°221 : black crust (tenorite), nodules (malachite)Minerals: TENORITE MALACHITEYear: 1901Country: Congo (RDC)
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Sample n°224 : altered spots (chalcopyrite), pink coating (cobalt-bearing calcite)Minerals: CALCITE CHALCOPYRITE MALACHITEYear: 1901Country: Congo (RDC)
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Sample n°226 : massive, cleavedMinerals: DOLOMITEYear: 1901Country: Congo (RDC)