Mineralogy Database

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337 samples matching your criteria

  • Sample n°344 : massive, blue
    Minerals: QUARTZ
    Year: 1910
    Country: Congo (RDC)
  • Sample n°347 : green crust on quartzite
    Minerals: MALACHITE
    Year:
    Country: Congo (RDC)
  • Sample n°348 : microcrystalline coating on quartzite
    Minerals: BARYTE
    Year:
    Country: Congo (RDC)
  • Sample n°349 : fibrous, yellowish
    Minerals: CALCITE
    Year: 1913
    Country: Congo (RDC)
  • Sample n°350 : crust composed of crystals (0.5 cm)
    Minerals: CALCITE PYRRHOTITE
    Year: 1913
    Country: Congo (RDC)
  • Sample n°515 : clear prism (6 cm), orange crystal (10 cm)
    Minerals: QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°531 : coating on quartzite
    Minerals: MALACHITE CALCITE
    Year:
    Country: Congo (RDC)
  • Sample n°554 : stalactitic concretion
    Minerals: CHALCEDONY (quartz)
    Year: 1910
    Country: Congo (RDC)
  • Sample n°555 : blocks with pink and green veins, var chrysoprase
    Minerals: QUARTZ
    Year: 1913
    Country: Congo (RDC)
  • Sample n°556 : geode with prismatic crystals (1 cm)
    Minerals: QUARTZ CHALCEDONY (quartz)
    Year: 1913
    Country: Congo (RDC)
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