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22 samples matching your criteria
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Sample n°12891 : white and yellow crystals (1-3 cm)Minerals: TOPAZ QUARTZYear: 1972Country: Nigeria
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Sample n°12892 : black tabular crystals in quartzMinerals: RIEBECKITEYear: 1972Country: Nigeria
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Sample n°12893 : cassiterite crystals in quartzMinerals: CASSITERITEYear: 1972Country: Nigeria
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Sample n°12894 : shiny black crystals in vein quartzMinerals: SPHALERITEYear: 1972Country: Nigeria
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Sample n°12895 : black fibro-radial materialMinerals: PYROLUSITEYear: 1972Country: Nigeria
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Sample n°12896 : altered black fibrous materialMinerals: VIVIANITEYear: 1972Country: Nigeria
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Sample n°12897 : black metallic mass in graniteMinerals: MOLYBDENITEYear:Country: Nigeria
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Sample n°12899 : granular, disseminated in veinMinerals: CASSITERITEYear: 1972Country: Nigeria
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Sample n°12900 : brown twinned crystal (5 cm)Minerals: SIDERITEYear: 1972Country: Nigeria
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Sample n°12901 : reworked materialMinerals: CHALCEDONY (quartz) QUARTZYear: 1972Country: Nigeria