Mineralogy Database

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85 samples matching your criteria

  • Sample n°12049 : colourless to yellowish glass-like opal on substrate, bright green fluorescence
    Minerals: OPAL
    Year:
    Country: Rwanda
  • Sample n°12488 : bundles of brown acicular prismatic crystals in oxidised rock
    Minerals: TOURMALINE
    Year: 1970
    Country: Rwanda
  • Sample n°12931 : green acicular actinolite on pink limestone
    Minerals: ACTINOLITE
    Year: 1972
    Country: Rwanda
  • Sample n°13124 : black crystals (3 cm) in vein quartz
    Minerals: WOLFRAMITE
    Year: 1972
    Country: Rwanda
  • Sample n°13363 : pink debris (4 cm)
    Minerals: SPODUMENE
    Year: 1976
    Country: Rwanda
  • Sample n°13366 : bright black twinned crystals (1 cm)
    Minerals: CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°13601 : plate of bright crystals (5 mm) on ochre oxidised rock
    Minerals: CASSITERITE
    Year: 1979
    Country: Rwanda
  • Sample n°14311 : white-pink crust on pink block (5 cm)
    Minerals: ANTHOINITE
    Year: 1983
    Country: Rwanda
  • Sample n°14357 : block of bright black crystals (6 mm)
    Minerals: CASSITERITE
    Year: 1986
    Country: Rwanda
  • Sample n°4203 : pegmatite
    Minerals: FELDSPAR
    Year: 1953
    Country: Rwanda
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