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46 samples matching your criteria
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Sample n°10848 : long black striated needles in gold-bearing quartzMinerals: TOURMALINE QUARTZYear: 1933Country: Congo (RDC)
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Sample n°10849 : amethyst (1 cm) in quartz veinMinerals: QUARTZ AMETHYST (quartz)Year: 1930Country: Congo (RDC)
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Sample n°10851 : boulder with gold aggregatesMinerals: GOLDYear: 1930Country: Congo (RDC)
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Sample n°10853 : mixed concentrate (1 cm)Minerals: RUTILE STAUROLITEYear: 1930Country: Congo (RDC)
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Sample n°10854 : white fibres (10 cm) in white quartziteMinerals: ACTINOLITEYear:Country: Congo (RDC)
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Sample n°10855 : rare in vein quartzMinerals: GALENA GRAPHITE PYRITE QUARTZYear: 1930Country: Congo (RDC)
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Sample n°10856 : black prismatic crystals (0.1-2 cm) in philliteMinerals: STAUROLITEYear: 1930Country: Congo (RDC)
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Sample n°10857 : isolated white crystals (2 cm), var. chiastoliteMinerals: ANDALUSITEYear: 1930Country: Congo (RDC)
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Sample n°10858 : black crystals (2 mm) and acicular rosettes in black phylliteMinerals: KYANITE STAUROLITEYear: 1930Country: Congo (RDC)
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Sample n°10860 : massive mixed sulfidesMinerals: ARSENOPYRITE PYRITEYear: 1930Country: Congo (RDC)