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24 samples matching your criteria
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Sample n°1475 : brown alluvial debrisMinerals: CASSITERITEYear:Country: Congo (RDC)
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Sample n°1527 : black crystals (2 cm) in vein quartzMinerals: CASSITERITE MUSCOVITE QUARTZYear:Country: Congo (RDC)
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Sample n°4767 : concentrate (1 cm)Minerals: COLUMBITE TANTALITEYear: 1954Country: Congo (RDC)
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Sample n°4768 : concentrate (8 mm), radioactiveMinerals: COLUMBITE TANTALITEYear: 1954Country: Congo (RDC)
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Sample n°4769 : tabular crystals (1-2 cm)Minerals: COLUMBITE TANTALITEYear: 1954Country: Congo (RDC)
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Sample n°4770 : tabular crystals (1-2 cm)Minerals: COLUMBITE TANTALITEYear: 1954Country: Congo (RDC)
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Sample n°4820 : crystals in vein quartz and isolated tabular crystals (2 cm)Minerals: COLUMBITEYear: 1955Country: Congo (RDC)
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Sample n°4821 : white concentrate (2 mm)Minerals: XENOTIME-(Y)Year: 1955Country: Congo (RDC)
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Sample n°4823 : octahedral zircon crystals (3-10 mm)Minerals: ZIRCON COLUMBITE CORUNDUMYear: 1955Country: Congo (RDC)
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Sample n°4824 : pink concentrate (2 mm)Minerals: ALMANDINEYear: 1955Country: Congo (RDC)