Mineralogy Database

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1097 samples matching your criteria

  • Sample n°1062 : geodic rock with white quartz with dioptase spots, green crust (volborthite) and bright black needles (vesignieite)
    Minerals: CHALCEDONY (quartz) QUARTZ VESIGNIEITE DIOPTASE VOLBORTHITE
    Year: 1910
    Country: Congo (RDC)
  • Sample n°1063 : geode of white and blue quartz, malachite fibres, blue veins (shattuckite), olive-green crust (volborthite)
    Minerals: MALACHITE QUARTZ SHATTUCKITE VOLBORTHITE
    Year: 1910
    Country: Congo (RDC)
  • Sample n°1064 : rock with black silex, grey geodes (chalcedony), layers of blue fibro-radial plancheite
    Minerals: CHALCEDONY (quartz) PLANCHEITE QUARTZ
    Year: 1910
    Country: Congo (RDC)
  • Sample n°1075 : green blocks with conchoidal fracture, var. heliotrope
    Minerals: QUARTZ
    Year: 1913
    Country: Congo (RDC)
  • Sample n°1076 : debris
    Minerals: QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°1079 : black tabular crystals in rock
    Minerals: MUSCOVITE WOLFRAMITE MALACHITE QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1080 : fragments and debris
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year: 1938
    Country: Congo (RDC)
  • Sample n°1081 : blue plates in quartz
    Minerals: KYANITE QUARTZ
    Year:
    Country: Unknown
  • Sample n°1092 : clear prismatic crystals (13 cm)
    Minerals: QUARTZ
    Year: 1938
    Country: Rwanda
  • Sample n°1094 : clear crystals (2-5 cm)
    Minerals: QUARTZ
    Year: 1938
    Country: Congo (RDC)
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