Mineralogy Database

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237 samples matching your criteria

  • Sample n°10467 : black shiny lamellae (1 cm) in quartz from pegmatite
    Minerals: COLUMBITE TANTALITE
    Year:
    Country: Rwanda
  • Sample n°10588 : block of mineralised pegmatite with large black plates
    Minerals: COLUMBITE BERYL
    Year:
    Country: Congo (RDC)
  • Sample n°10589 : striated crystal (13 cm) and plates (4 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°10623 : black tablets (1-4 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°10624 : black tablets (5 cm)
    Minerals: COLUMBITE
    Year: 1965
    Country: Rwanda
  • Sample n°10631 : black tablets (8 cm) in vein quartz
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°10635 : black plates (1-6 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°10668 : black tabular crystals (1-7 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°10906 : sample with fluorite, red thorite (var. orangite), little black columbo-tantalite
    Minerals: FLUORITE COLUMBITE TANTALITE THORITE
    Year:
    Country: Sweden
  • Sample n°11257 : black debris (1-3 cm)
    Minerals: COLUMBITE TANTALITE
    Year:
    Country: Rwanda
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