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12 samples matching your criteria
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Sample n°1431 : tourmalinite fragment (10 cm)Minerals: TOURMALINEYear:Country: Congo (RDC)
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Sample n°1441 : block (7 cm) with ochre surfaceMinerals: CASSITERITEYear:Country: Congo (RDC)
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Sample n°1902 : tourmalinite fragment (10 cm)Minerals: TOURMALINEYear:Country: Congo (RDC)
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Sample n°1904 : black fibrous block (7 cm)Minerals: TOURMALINEYear:Country: Congo (RDC)
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Sample n°1922 : black crystals (1 cm) in greisenMinerals: CASSITERITEYear: 1972Country: Congo (RDC)
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Sample n°1925 : grey crystals in quartzMinerals: CASSITERITEYear:Country: Congo (RDC)
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Sample n°1953 : grey plates (1-3 cm)Minerals: WOLFRAMITEYear:Country: Congo (RDC)
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Sample n°1954 : bright plates (4 cm)Minerals: WOLFRAMITEYear:Country: Congo (RDC)
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Sample n°1955 : bright black crystals in quartzMinerals: WOLFRAMITE QUARTZYear:Country: Congo (RDC)
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Sample n°1958 : black square tablets (1 cm)Minerals: COLUMBITEYear:Country: Congo (RDC)