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28 samples matching your criteria
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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°6614 : brick-red debris (cm)Minerals: CINNABARYear: 1955Country: Brazil
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Sample n°6615 : part of colourless clear prismatic crystal (5 cm)Minerals: TOPAZYear: 1955Country: Brazil
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Sample n°6616 : yellow prismatic crystals (2 cm)Minerals: TOPAZYear: 1955Country: Brazil
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Sample n°6617 : clear rhombohedral crystal (2 cm) and debris (1 cm)Minerals: PHENAKITEYear: 1955Country: Brazil
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Sample n°6618 : dark green prismatic crystals (1-2 cm)Minerals: TOURMALINEYear: 1955Country: Brazil
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Sample n°6619 : black prismatic crystals (15 mm)Minerals: RUTILEYear: 1955Country: Brazil
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Sample n°6623 : purple micaceous block (7 cm)Minerals: LEPIDOLITEYear: 1955Country: Brazil
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Sample n°7087 : concentrateMinerals: URANMICROLITE CASSITERITE COLUMBITE SPODUMENEYear: 1959Country: Brazil
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Sample n°7088 : concentrate, from pegmatiteMinerals: URANMICROLITEYear: 1959Country: Brazil