Mineralogy Database

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236 samples matching your criteria

  • Sample n°9351 : black tabular crystals (1-2 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°9484 : black plates (1 cm)
    Minerals: COLUMBITE TANTALITE CASSITERITE
    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°9852 : sample with small veins of yellow phuralumite crystals, ranunculite as yellow crusts and nodules, white coeruleolactite, little columbite
    Minerals: PHURALUMITE RANUNCULITE COERULEOLACTITE COLUMBITE
    Year:
    Country: Congo (RDC)
  • Sample n°9853 : sample with various types of unidentified uraniferous minerals
    Minerals: COLUMBITE ZIRCON
    Year:
    Country: Congo (RDC)
  • Sample n°9854 : sample with greenish withe micaceous threadgoldite, greenish yellow mundite plates, yellow-green meta-autunite (strongly altered), little columbite
    Minerals: MUNDITE THREADGOLDITE BERYL COLUMBITE META-AUTUNITE
    Year:
    Country: Congo (RDC)
  • Sample n°9863 : sample with green moreauite plates, bright black columbite, radial aggregates of black-brown rockbridgeite needles, altered phosphosiderite, little meta-autunite
    Minerals: MOREAUITE COLUMBITE META-AUTUNITE PHOSPHOSIDERITE ROCKBRIDGEITE TANTALITE
    Year:
    Country: Congo (RDC)
  • Sample n°9864 : sample with threadgoldite as light yellow mica-like plates, golden yellow ranunculite nodules, phuralumite as yellow powder
    Minerals: RANUNCULITE THREADGOLDITE COLUMBITE PHURALUMITE
    Year:
    Country: Congo (RDC)
  • Sample n°10258 : black striated plate (2 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°10260 : black crystal (1 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
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