Mineralogy Database

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3 samples matching your criteria

  • Sample n°5487 : sample with equant grey-green uranmicrolite crystals, black columbo-tantalite
    Minerals: URANMICROLITE COLUMBITE TANTALITE
    Year: 1955
    Country: Brazil
  • Sample n°7087 : concentrate
    Minerals: URANMICROLITE CASSITERITE COLUMBITE SPODUMENE
    Year: 1959
    Country: Brazil
  • Sample n°7088 : concentrate, from pegmatite
    Minerals: URANMICROLITE
    Year: 1959
    Country: Brazil
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