Mineralogy Database

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1097 samples matching your criteria

  • Sample n°930 : specular (hematite), granular (magnetite)
    Minerals: HEMATITE MAGNETITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°934 : massive black crust and impregnation
    Minerals: PYROLUSITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°965 : small colourless quartz crystals
    Minerals: QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°968 : white crystals with greasy lustre (cerussite), on green nodules (malachite)
    Minerals: CERUSSITE MALACHITE QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°983 : smoky quartz
    Minerals: QUARTZ FELDSPAR
    Year: 1937
    Country: Congo (RDC)
  • Sample n°993 : blue crystals (1 cm) in limestone
    Minerals: QUARTZ
    Year: 1937
    Country: Congo (RDC)
  • 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°1002 : blue crystals on calcite
    Minerals: QUARTZ
    Year: 1937
    Country: Congo (RDC)
  • Sample n°1007 : fragments (1-2 cm)
    Minerals: CASSITERITE QUARTZ TOURMALINE
    Year: 1937
    Country: Congo (RDC)
  • Sample n°1023 : crust of octahedral crystals
    Minerals: MAGNETITE QUARTZ
    Year: 1938
    Country: Congo (RDC)
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