Mineralogy Database

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105 samples matching your criteria

  • 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°839 : polished pink and white block
    Minerals: CHALCEDONY (quartz)
    Year:
    Country: South Africa
  • Sample n°864 : debris
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year: 1934
    Country: Rwanda
  • Sample n°996 : ferruginous substrate with veins of copper minerals and quartz
    Minerals: DIOPTASE HEMATITE QUARTZ CHALCEDONY (quartz) CHRYSOCOLLA GOETHITE
    Year: 1937
    Country: Congo (RDC)
  • Sample n°1003.2 : pink limestone with crust of blue needles, olive-green crust
    Minerals: CHALCEDONY (quartz)
    Year: 1937
    Country: Congo (RDC)
  • Sample n°1051 : block with quartz crystals (amethyst), covered by chalcedony
    Minerals: CHALCEDONY (quartz) AMETHYST (quartz)
    Year: 1938
    Country: Congo (RDC)
  • 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°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°1066 : bluish geodes in massive hematite
    Minerals: CHALCEDONY (quartz) HEMATITE
    Year:
    Country: Congo (RDC)
  • Sample n°1077 : pink banded fragments
    Minerals: AGATE (quartz) CHALCEDONY (quartz)
    Year:
    Country: Congo (RDC)
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