Mineralogy Database

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1097 samples matching your criteria

  • Sample n°700 : earthy material in greisen
    Minerals: GRAPHITE QUARTZ
    Year: 1913
    Country: Congo (RDC)
  • Sample n°709 : fragmented black prismatic crystal
    Minerals: TOURMALINE QUARTZ
    Year: 1913
    Country: Congo (RDC)
  • Sample n°716 : chisel-shaped crystals (2 cm) in chalcedony geode
    Minerals: CALCITE CHALCEDONY (quartz) QUARTZ
    Year: 1912
    Country: Congo (RDC)
  • Sample n°720 : rock with large black crystals
    Minerals: KYANITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°745 : band of green broken crystals in siliceous rock
    Minerals: DIOPTASE KATANGITE (plancheite) QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°751 : siliceous block, coverd by green twinned crystals (5 mm) (libethenite) and blue nodules (chalcedony)
    Minerals: CHALCEDONY (quartz) LIBETHENITE QUARTZ
    Year: 1910
    Country: Congo (RDC)
  • Sample n°754 : green and colourless clear crystals (quartz), pale green powder (katangite)
    Minerals: QUARTZ KATANGITE (plancheite)
    Year:
    Country: Congo (RDC)
  • Sample n°759 : small nuggets in quartz vein
    Minerals: GOLD QUARTZ
    Year: 1912
    Country: Congo (RDC)
  • Sample n°767 : disseminated in cavernous quartz
    Minerals: GOLD QUARTZ
    Year: 1926
    Country: Congo (RDC)
  • Sample n°768 : coating on smoky quartz
    Minerals: GOLD QUARTZ
    Year: 1926
    Country: Congo (RDC)
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