Mineralogy Database

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230 samples matching your criteria

  • Sample n°11888 : sample with golden-yellow elongated mundite crystals, felty fine-acicular yellow upalite, ranunculite as bright golden-yellow small crystals and as crust of yellow-orange crystals, fluorescent white meta-autunite crusts, metamict zircon
    Minerals: MUNDITE UPALITE COLUMBITE META-AUTUNITE RANUNCULITE URANINITE ZIRCON
    Year: 1969
    Country: Congo (RDC)
  • Sample n°12054 : massive coarse-grained intergrowths, one polished surface
    Minerals: CASSITERITE COLUMBITE TANTALITE
    Year: 1969
    Country: Portugal
  • Sample n°12133 : black plates (1 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°12134 : dark grey plates (2 cm)
    Minerals: COLUMBITE
    Year:
    Country: Rwanda
  • Sample n°12345 : bright black plates (2-4 cm)
    Minerals: COLUMBITE
    Year: 1970
    Country: Rwanda
  • Sample n°12493 : crystals, fragments, matrix occurrence
    Minerals: COLUMBITE TANTALITE-(Mn) MICROLITE WODGINITE
    Year: 1970
    Country: Rwanda
  • Sample n°12654 : brown plates (1 cm) and green platelets in pegmatite
    Minerals: COLUMBITE MUSCOVITE
    Year: 1971
    Country: Congo (RDC)
  • Sample n°12656 : broken tabular crystals (4 cm) in vein quartz
    Minerals: COLUMBITE QUARTZ
    Year: 1971
    Country: Congo (RDC)
  • Sample n°12657 : small crystals in vein quartz
    Minerals: COLUMBITE QUARTZ
    Year: 1971
    Country: Congo (RDC)
  • Sample n°12683 : black concentrate (5 mm)
    Minerals: COLUMBITE
    Year: 1971
    Country: Congo (RDC)
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