Mineralogy Database

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102 samples matching your criteria

  • Sample n°10624 : black tablets (5 cm)
    Minerals: COLUMBITE
    Year: 1965
    Country: Rwanda
  • Sample n°10627 : dark green crystals (1-7 cm)
    Minerals: CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°10675 : cleaved white blocks (7 and 11 cm)
    Minerals: MONTEBRASITE
    Year:
    Country: Rwanda
  • Sample n°10677 : various broken black crystals (1-6 cm), with polished section
    Minerals: CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°11215 : purple crust with chevron texture (10 cm)
    Minerals: AMETHYST (quartz)
    Year:
    Country: Rwanda
  • Sample n°11705 : fragments (10 cm) of zoned purple and white crust
    Minerals: AMETHYST (quartz)
    Year: 1967
    Country: Rwanda
  • Sample n°12121 : clear prismatic crystals (2 cm)
    Minerals: EUCLASE
    Year: 1969
    Country: Rwanda
  • Sample n°12877 : white clay on purple debris
    Minerals: KAOLINITE
    Year: 1972
    Country: Rwanda
  • Sample n°12932 : sample with green autunite on stony beryl
    Minerals: AUTUNITE BERYL
    Year: 1972
    Country: Rwanda
  • Sample n°12933 : stony prismatic crystal (18 cm), covered with pale green platelets
    Minerals: BERYL MUSCOVITE
    Year: 1972
    Country: Rwanda
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