Mineralogy Database

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1097 samples matching your criteria

  • Sample n°10846 : small crystals on quartz fragment
    Minerals: GOLD QUARTZ
    Year: 1930
    Country: Congo (RDC)
  • Sample n°10848 : long black striated needles in gold-bearing quartz
    Minerals: TOURMALINE QUARTZ
    Year: 1933
    Country: Congo (RDC)
  • Sample n°10849 : amethyst (1 cm) in quartz vein
    Minerals: QUARTZ AMETHYST (quartz)
    Year: 1930
    Country: Congo (RDC)
  • Sample n°10855 : rare in vein quartz
    Minerals: GALENA GRAPHITE PYRITE QUARTZ
    Year: 1930
    Country: Congo (RDC)
  • Sample n°10861 : vitreous block (8 cm)
    Minerals: QUARTZ
    Year: 1930
    Country: Congo (RDC)
  • Sample n°10863 : bright black coating on vein quartz
    Minerals: GRAPHITE QUARTZ
    Year: 1930
    Country: Congo (RDC)
  • Sample n°10877 : sample with olive to dark green demesmaekerite crystals, brown-orange hematite needles, fibrous and compact malachite on quartz
    Minerals: DEMESMAEKERITE HEMATITE CHALCOCITE MALACHITE QUARTZ WULFENITE
    Year: 1966
    Country: Congo (RDC)
  • Sample n°11144 : sample with metatorbernite, few meta-autunite crystals, smoky quartz
    Minerals: META-AUTUNITE METATORBERNITE CHALCEDONY (quartz) HEMATITE QUARTZ
    Year: 1966
    Country: France
  • Sample n°11213 : clear prismatic crystals (5-25 cm)
    Minerals: QUARTZ
    Year: 1966
    Country: Brazil
  • Sample n°11224 : gold-bearing white debris
    Minerals: QUARTZ
    Year:
    Country: Congo (RDC)
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