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236 samples matching your criteria
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Sample n°12691 : black fragments (1-5 cm)Minerals: COLUMBITEYear: 1972Country: Congo (RDC)
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Sample n°12728 : black concentrate (5 mm)Minerals: COLUMBITEYear: 1972Country: Congo (RDC)
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Sample n°12758 : debris of black crystalsMinerals: COLUMBITEYear: 1972Country: Congo (RDC)
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Sample n°12832 : black scoriaceous blocks (2 cm)Minerals: COLUMBITE TANTALITEYear: 1971Country: Congo (RDC)
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Sample n°12837 : sample with yellow meta-autunite, metamict zirconMinerals: META-AUTUNITE COLUMBITE ZIRCONYear:Country: Congo (RDC)
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Sample n°13153 : sample with yellow ranunculite nodules, radial aggregates of pale yellow furongite crystals, green meta-autunite plates, white mica-like threadgolditeMinerals: FURONGITE RANUNCULITE COLUMBITE FRONDELITE META-AUTUNITE THREADGOLDITEYear: 1974Country: Congo (RDC)
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Sample n°13459 : sample with yellow meta-autunite lamellae, grey to white lizardite, black columbite, metamict zircon, uraninite pseudomorphic after crystals with hexagonal and triangular formsMinerals: LIZARDITE META-AUTUNITE COLUMBITE URANINITE ZIRCONYear: 1968Country: Congo (RDC)
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Sample n°13462 : sample with pale yellow furongite, bright canary-yellow phosphuranylite lamellae, yellow and white meta-autunite platesMinerals: FURONGITE PHOSPHURANYLITE COLUMBITE META-AUTUNITE METATORBERNITE ZIRCONYear: 1968Country: Congo (RDC)
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Sample n°13464 : sample with furongite as veins of amber-coloured plate-shaped crystals and as light yellow crystals, crusts of small golden yellow triangulite crystals, moreauite as lemon-yellow crusts or nodules, white meta-autunite crystals with square forms, traces of metatorbernite, metamict zirconMinerals: COLUMBITE META-AUTUNITE METATORBERNITE ZIRCON FURONGITE MOREAUITE TRIANGULITEYear:Country: Congo (RDC)
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Sample n°13534 : sample with meta-autunite bladesMinerals: META-AUTUNITE COLUMBITEYear: 1978Country: Congo (RDC)