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32 samples matching your criteria
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Sample n°12811 : black crystals (1 cm) disseminated in rockMinerals: WOLFRAMITEYear: 1972Country: South Africa
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Sample n°12812 : purple black prismatic crystals (8 x 10 cm)Minerals: ANDALUSITEYear: 1972Country: South Africa
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Sample n°12813 : block of shiny crystalline materialMinerals: LITHIOPHILITEYear: 1972Country: South Africa
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Sample n°12814 : black block with brown crustMinerals: ALLANITE-(Ce)Year: 1972Country: South Africa
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Sample n°12815 : black mass with ochreous coverMinerals: EUXENITE-(Y)Year: 1972Country: South Africa
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Sample n°12816 : black vitreous blockMinerals: FERGUSONITEYear: 1972Country: South Africa
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Sample n°12817 : tiger's eye (silicified crocidolite) (15 cm)Minerals: RIEBECKITE QUARTZYear: 1972Country: South Africa
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Sample n°12818 : tiger's eye (silicified crocidolite), roughMinerals: RIEBECKITEYear: 1972Country: South Africa
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Sample n°12819 : brown crystalline mass (phosphorite)Minerals: FLUORAPATITEYear: 1972Country: South Africa
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Sample n°12820 : block enclosing brown vitreous crystals (descloizite), geode with white calciteMinerals: DESCLOIZITE CALCITEYear: 1972Country: Namibia