Mineralogy Database

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94 samples matching your criteria

  • Sample n°143 : grey cleaved crystals
    Minerals: MICROCLINE BIOTITE
    Year: 1900
    Country: Congo (RDC)
  • Sample n°804 : large biotite crystals
    Minerals: BIOTITE FELDSPAR
    Year: 1930
    Country: Congo (RDC)
  • Sample n°852 : red crystals (feldspar), green plates (biotite)
    Minerals: BIOTITE FELDSPAR
    Year:
    Country: Congo (RDC)
  • Sample n°869 : pegmatite
    Minerals: BIOTITE KYANITE
    Year: 1934
    Country: Congo (RDC)
  • Sample n°1583 : plate-shaped crystals on rock substrate
    Minerals: BIOTITE
    Year: 1939
    Country: Congo (RDC)
  • Sample n°1726 : dark brown prismatic crystals in biotitite
    Minerals: STAUROLITE BIOTITE
    Year:
    Country: Congo (RDC)
  • Sample n°1805 : altered black plate-shaped crystals (10 cm)
    Minerals: BIOTITE
    Year:
    Country: Congo (RDC)
  • Sample n°1874.1 : pink pegmatite
    Minerals: ORTHOCLASE BIOTITE
    Year:
    Country: Congo (RDC)
  • Sample n°2177 : quartz mass with biotite vein (saw-tooth pattern)
    Minerals: BIOTITE QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°2356 : colourless beryl crystals in pegmatite with mica
    Minerals: BERYL BIOTITE
    Year:
    Country: Congo (RDC)
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