Mineralogy Database

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291 samples matching your criteria

  • Sample n°9088 : black vesicular lava (9 cm), with anorthite (var. bytownite)
    Minerals: FORSTERITE ANORTHITE DIOPSIDE
    Year: 1962
    Country: Rwanda
  • Sample n°9089 : white debris (4 cm)
    Minerals: DOLOMITE
    Year: 1962
    Country: Burundi
  • Sample n°9126.1 : grey fragments (3 cm)
    Minerals: CASSITERITE
    Year: 1962
    Country: Rwanda
  • Sample n°9126.2 : vitreous concentrate (7 mm)
    Minerals: TOPAZ
    Year:
    Country: Rwanda
  • Sample n°9127 : bright black twinned crystals (1-3 cm), with polished section
    Minerals: CASSITERITE
    Year: 1962
    Country: Rwanda
  • Sample n°9128 : black scoriaceous mass (4 cm)
    Minerals: FERBERITE KAOLINITE
    Year: 1962
    Country: Rwanda
  • Sample n°9129 : bright black tabular crystals (3 cm)
    Minerals: WOLFRAMITE
    Year: 1962
    Country: Rwanda
  • Sample n°9601 : pink blocks (8-13 cm)
    Minerals: MICROCLINE
    Year: 1970
    Country: Rwanda
  • Sample n°9614 : blue crystals in albitic rock (12 cm)
    Minerals: APATITE
    Year: 1970
    Country: Rwanda
  • Sample n°9695 : sample with green autunite in geode, smoky quartz
    Minerals: AUTUNITE QUARTZ
    Year: 1962
    Country: Rwanda
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