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36 samples matching your criteria
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Sample n°6553 : brown-purple block (7 cm)Minerals: HETEROSITEYear:Country: Rwanda
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Sample n°6554 : joined stalactites (22 cm)Minerals: CALCITEYear:Country: Rwanda
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Sample n°6555 : black cassiterite in vein quartzMinerals: CASSITERITE MICA QUARTZYear:Country: Rwanda
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Sample n°6556 : tabular brown staurolite crystals (6 cm), brown garnet, in graphitic schistMinerals: GARNET STAUROLITEYear:Country: Congo (RDC)
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Sample n°6557.1 : debris in quartzMinerals: PYRITE QUARTZYear: 1952Country: Congo (RDC)
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Sample n°6561 : scoracious block with grey bismutite and brown tourmalineMinerals: BISMUTITE TOURMALINE QUARTZYear:Country: Congo (RDC)
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Sample n°6563 : black coating and olive-green crust in geodic vein quartzMinerals: CASSITERITE SCORODITE QUARTZYear:Country: Congo (RDC)
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Sample n°6565 : yellow and brown crystals in geodic vein quartzMinerals: CASSITERITE PYRITE QUARTZYear:Country: Congo (RDC)
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Sample n°6570 : lateritic materialMinerals: GOETHITEYear:Country: Congo (RDC)
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Sample n°6573 : white vein (1 cm) in large quartz fragmentMinerals: GYPSUM ARAGONITEYear:Country: Congo (RDC)