Mineralogy Database

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122 samples matching your criteria

  • Sample n°12493 : crystals, fragments, matrix occurrence
    Minerals: COLUMBITE TANTALITE-(Mn) MICROLITE WODGINITE
    Year: 1970
    Country: Rwanda
  • Sample n°12499 : stony and emerald-like prismatic crystals (1-8 cm), partly twinned
    Minerals: BERYL
    Year: 1970
    Country: Rwanda
  • Sample n°12981 : muscovitite with large pale green plates
    Minerals: MUSCOVITE
    Year: 1970
    Country: Rwanda
  • Sample n°13362 : white blocks (8 cm), with cleavage
    Minerals: AMBLYGONITE
    Year:
    Country: Rwanda
  • Sample n°14326 : dark grey prismatic and tabular crystals (2-7 cm)
    Minerals: COLUMBITE TANTALITE
    Year: 1983
    Country: Rwanda
  • Sample n°15833 : crystals (up to 1 cm)
    Minerals: WODGINITE
    Year:
    Country: Rwanda
  • Sample n°9657 : pegmatite with partially albitised microcline, coarse-crystalline muscovite
    Minerals: MICROCLINE MUSCOVITE
    Year: 1962
    Country: Rwanda
  • Sample n°11145 : microcline-dominated pegmatite with muscovite-rich veins
    Minerals: MUSCOVITE MICROCLINE
    Year:
    Country: Rwanda
  • Sample n°9641 : albite-bearing coarse-grained pegmatite
    Minerals: ALBITE QUARTZ
    Year:
    Country: Rwanda
  • Sample n°17128 : concentrate
    Minerals: MICROLITE
    Year: 2014
    Country: Rwanda
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