Mineralogy Database

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331 samples matching your criteria

  • Sample n°11215 : purple crust with chevron texture (10 cm)
    Minerals: AMETHYST (quartz)
    Year:
    Country: Rwanda
  • Sample n°11290 : white blocks with prominent cleavage (10 cm)
    Minerals: ALBITE
    Year:
    Country: Rwanda
  • Sample n°11482 : fragment of single crystal, vitreous lustre
    Minerals: TANTALITE-(Mn)
    Year:
    Country: Rwanda
  • Sample n°11692 : broken fragment (5 cm), var. chiastolite
    Minerals: ANDALUSITE
    Year:
    Country: Rwanda
  • Sample n°12133 : black plates (1 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°12134 : dark grey plates (2 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°12974 : black crystals (2 cm)
    Minerals: AUGITE
    Year:
    Country: Rwanda
  • Sample n°13926 : black bertossaite and white montebrasite on pale blue block
    Minerals: BERTOSSAITE MONTEBRASITE TROLLEITE
    Year:
    Country: Rwanda
  • Sample n°8854 : pegmatite
    Minerals: MUSCOVITE ALBITE
    Year:
    Country: Rwanda
  • Sample n°9745 : autunite on quartz, in geode
    Minerals: AUTUNITE BOLTWOODITE URANINITE
    Year: 1962
    Country: Rwanda
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