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236 samples matching your criteria
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Sample n°5463 : mineralised pegmatiteMinerals: BERYL COLUMBITEYear: 1955Country: Congo (RDC)
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Sample n°5487 : sample with equant grey-green uranmicrolite crystals, black columbo-tantaliteMinerals: URANMICROLITE COLUMBITE TANTALITEYear: 1955Country: Brazil
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Sample n°5877 : black concentrate (mm)Minerals: COLUMBITE TANTALITEYear:Country: Congo (RDC)
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Sample n°5878 : black fine concentrateMinerals: COLUMBITE TANTALITEYear: 1956Country: Congo (RDC)
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Sample n°5879 : black concentrate (2 mm)Minerals: COLUMBITE TANTALITEYear: 1956Country: Congo (RDC)
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Sample n°5880 : black concentrate (mm)Minerals: COLUMBITE TANTALITEYear: 1956Country: Congo (RDC)
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Sample n°5951 : sample with yellow threadgoldite plates, amber-coloured upalite needles, small canary-yellow althupite crystals, yellow/amber-coloured upalite crystals on trheadgoldite, felty acicular canary-yellow phospuranylite on micaMinerals: ALTHUPITE THREADGOLDITE UPALITE COLUMBITE PHOSPHURANYLITE ZIRCONYear: 1957Country: Congo (RDC)
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Sample n°6004 : sample with bolivarite (uranium-bearing), pink to grey fluorapatite, brown lithiophorite in bolivarite, bright black columbiteMinerals: BOLIVARITE COERULEOLACTITE COLUMBITE FLUORAPATITE LITHIOPHORITE TANTALITEYear: 1957Country: Congo (RDC)
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Sample n°6115 : concentrate (1-3 cm)Minerals: COLUMBITE TANTALITEYear: 1957Country: Congo (RDC)
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Sample n°6133 : reworked bluish black crystalMinerals: COLUMBITE TANTALITEYear:Country: Congo (RDC)