Mineralogy Database

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14 samples matching your criteria

  • Sample n°18536 : thick layered crust, grading to amethyst
    Minerals: QUARTZ
    Year:
    Country: Rwanda
  • Sample n°12493.33 : prismatic crystal
    Minerals: COLUMBITE
    Year: 1970
    Country: Rwanda
  • Sample n°18762 : rounded fragments
    Minerals: BISMUTHINITE
    Year:
    Country: Rwanda
  • Sample n°18763 : crystal fragment
    Minerals: COLUMBITE TANTALITE
    Year: 2019
    Country: Rwanda
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