Mineralogy Database

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948 samples matching your criteria

  • Sample n°1858 : pale green muscovite plates enclosing one black cassiterite crystal
    Minerals: MUSCOVITE CASSITERITE
    Year:
    Country: Rwanda
  • Sample n°1860 : bright black debris
    Minerals: HEMATITE
    Year:
    Country: Rwanda
  • Sample n°1871 : dull hexagonal prismatic crystal (10 cm)
    Minerals: BERYL
    Year:
    Country: Rwanda
  • Sample n°1873 : irregular (8 cm)
    Minerals: ALMANDINE
    Year:
    Country: Rwanda
  • Sample n°2023 : black spots and dull shapeless crystals in pegmatite
    Minerals: BERYL TOURMALINE
    Year:
    Country: Rwanda
  • Sample n°2857 : purple block (5 cm)
    Minerals: HETEROSITE
    Year: 1948
    Country: Rwanda
  • Sample n°2858 : purple and pink block (8 cm)
    Minerals: HETEROSITE ALLUAUDITE
    Year: 1948
    Country: Rwanda
  • Sample n°2859 : purple block (4 cm)
    Minerals: FERRISICKLERITE
    Year: 1948
    Country: Rwanda
  • Sample n°2860 : olive green (ferrisicklerite) and purple (heterosite) blocks, purple crust (phosphosiderite)
    Minerals: FERRISICKLERITE HETEROSITE PHOSPHOSIDERITE
    Year: 1950
    Country: Rwanda
  • Sample n°2861 : white block (5 cm)
    Minerals: MONTEBRASITE
    Year:
    Country: Rwanda
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