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124 samples matching your criteria
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Sample n°12612 : hexagonal crystals in pegmatiteMinerals: PHLOGOPITEYear: 1971Country: Tanzania
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Sample n°12613 : large blue crystal (20 cm)Minerals: KYANITEYear: 1971Country: Tanzania
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Sample n°12614 : rounded black crystal (25 cm)Minerals: ILMENITEYear: 1971Country: Tanzania
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Sample n°12615 : sample with uraninite, canary-yellow phosphuranylite crystals, yellow-orange kasolite nodules, white uranophane fibres, metamict zirconMinerals: PHOSPHURANYLITE URANINITE KASOLITE LIZARDITE URANOPHANE ZIRCONYear: 1971Country: Tanzania
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Sample n°13956 : black crystal (1 cm), var. ilmenorutileMinerals: RUTILEYear: 1982Country: Tanzania
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Sample n°14032 : black block with waxy lustre, mixed compositionMinerals: AESCHYNITE THORITEYear: 1982Country: Tanzania
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Sample n°14103 : blue tabular crystal (5-10 cm)Minerals: KYANITEYear: 1984Country: Tanzania
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Sample n°14104 : rhombododecahedrons, granularMinerals: GARNETYear: 1984Country: Tanzania
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Sample n°14105 : hexagonal tabular crystal (4 cm)Minerals: CORUNDUMYear: 1984Country: Tanzania
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Sample n°14106 : aggregate of pink fibres with brown surfaceMinerals: TREMOLITEYear: 1984Country: Tanzania