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13 samples matching your criteria
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Sample n°717 : elongated white crystals, silkyMinerals: SILLIMANITEYear: 1909Country: Congo (RDC)
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Sample n°718.1 : fragment (10 cm)Minerals: SILLIMANITEYear: 1909Country: Congo (RDC)
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Sample n°718.2 : rounded black crystal, var. fibroliteMinerals: SILLIMANITEYear: 1909Country: Congo (RDC)
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Sample n°722 : colourless crystals in pegmatiteMinerals: APATITEYear: 1909Country: Congo (RDC)
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Sample n°795 : needles in quartzMinerals: SILLIMANITEYear: 1909Country: Congo (RDC)
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Sample n°1046 : plate-shaped muscovite crystals in garnet-bearing rockMinerals: MUSCOVITE GARNETYear: 1938Country: Congo (RDC)
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Sample n°1048 : crystals (cm) in pegmatiteMinerals: MUSCOVITEYear: 1938Country: Congo (RDC)
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Sample n°1049 : large reworked crystalsMinerals: SILLIMANITEYear: 1939Country: Congo (RDC)
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Sample n°1051 : block with quartz crystals (amethyst), covered by chalcedonyMinerals: CHALCEDONY (quartz) AMETHYST (quartz)Year: 1938Country: Congo (RDC)
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Sample n°1105 : purple concentrateMinerals: GARNETYear: 1938Country: Congo (RDC)