Mineralogy Database

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1547 samples matching your criteria

  • Sample n°863 : black earth-like debris
    Minerals: HEMATITE
    Year: 1934
    Country: Rwanda
  • Sample n°864 : debris
    Minerals: CHALCEDONY (quartz) QUARTZ
    Year: 1934
    Country: Rwanda
  • Sample n°1092 : clear prismatic crystals (13 cm)
    Minerals: QUARTZ
    Year: 1938
    Country: Rwanda
  • Sample n°1093 : bundles of black prismatic crystals in tourmalinite
    Minerals: SCHORL
    Year: 1938
    Country: Rwanda
  • Sample n°1310 : spots in pink pegmatite
    Minerals: CASSITERITE
    Year: 1934
    Country: Rwanda
  • Sample n°1311 : brown crystals (1-5 cm)
    Minerals: CASSITERITE
    Year: 1934
    Country: Rwanda
  • Sample n°1312 : bundles of prismatic crystals in greisen
    Minerals: SCHORL
    Year: 1934
    Country: Rwanda
  • Sample n°1793 : layer (10 cm) of brown crystals
    Minerals: CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°1794 : vein quartz with bright black wolframite
    Minerals: WOLFRAMITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°1795 : geode with black crystals (mm) in white quartz (8 cm)
    Minerals: WOLFRAMITE QUARTZ
    Year:
    Country: Rwanda
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