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16 samples matching your criteria
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Sample n°13364 : octahedron (1 cm)Minerals: FERBERITEYear:Country: Rwanda
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Sample n°13365 : black octahedra (1 cm)Minerals: CASSITERITEYear:Country: Rwanda
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Sample n°13366 : bright black twinned crystals (1 cm)Minerals: CASSITERITEYear:Country: Rwanda
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Sample n°13367 : white crust on brown ore and quartzMinerals: ANTHOINITEYear:Country: Rwanda
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Sample n°13369 : black crystals (1 cm)Minerals: AUGITEYear:Country: Rwanda
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Sample n°19640 : rounded block, from eluvial depositsMinerals: FERBERITEYear:Country: Rwanda