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37 samples matching your criteria
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Sample n°2190 : white debrisMinerals: ANTHOINITEYear:Country: Congo (RDC)
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Sample n°2191 : fragments with metallic lustre (1 cm)Minerals: BISMUTHYear:Country: Congo (RDC)
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Sample n°2192 : plates (5-10 mm)Minerals: WOLFRAMITEYear:Country: Congo (RDC)
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Sample n°2194 : aggregate of tabular crystals (5 cm)Minerals: WOLFRAMITE ANTHOINITEYear:Country: Congo (RDC)
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Sample n°3275 : isolated black plates (1 cm)Minerals: COLUMBITE TANTALITEYear:Country: Congo (RDC)
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Sample n°3276 : black concentrate (mm)Minerals: COLUMBITEYear:Country: Congo (RDC)
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Sample n°3277 : disseminated in greisenised schistMinerals: CASSITERITEYear:Country: Congo (RDC)
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Sample n°3278 : block of brown twinned crystals (10 cm)Minerals: CASSITERITEYear:Country: Congo (RDC)
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Sample n°3279 : black crystals (5 mm), disseminated in greisenMinerals: CASSITERITEYear:Country: Congo (RDC)
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Sample n°4189 : prismatic crystals of smoky quartz (3 and 5 cm)Minerals: QUARTZYear:Country: Congo (RDC)