Mineralogy Database

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3 samples matching your criteria

  • Sample n°8812 : sample composed of concentrate of radioactive microlite
    Minerals: MICROLITE
    Year:
    Country: Rwanda
  • Sample n°9694 : sample composed of concentratre of yellow-red microlite with greasy lustre, dark brown columbite
    Minerals: MICROLITE COLUMBITE
    Year: 1962
    Country: Rwanda
  • Sample n°11258 : black debris (2 cm)
    Minerals: TANTALITE
    Year:
    Country: Rwanda
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