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24 samples matching your criteria
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Sample n°2177 : quartz mass with biotite vein (saw-tooth pattern)Minerals: BIOTITE QUARTZYear: 1936Country: Congo (RDC)
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Sample n°6532 : black pyroxenoliteMinerals: AUGITEYear:Country: Congo (RDC)
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Sample n°17611 : coarse-crystalline aggregateMinerals: CASSITERITEYear: 2017Country: Congo (RDC)
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Sample n°17619 : cassiterite in greisenMinerals: CASSITERITEYear: 2017Country: Congo (RDC)