Mineralogy Database

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7938 samples matching your criteria

  • Sample n°1357 : two bronze-coloured crystals (1 cm) in vein quartz with mica
    Minerals: PYRRHOTITE MICA QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1358 : geode with cassiterite crystals (1 cm) in micaceous quartzite
    Minerals: CASSITERITE
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1362 : massive vein (1 x 10 cm) on gabbro
    Minerals: PYRRHOTITE
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1363 : black crystalline coating on vein quartz (20 cm)
    Minerals: CASSITERITE MUSCOVITE QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1364 : broken crystal (3 cm) in vein quartz
    Minerals: CASSITERITE QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1365 : aggregate of twinned crystals (2 cm) on greisen
    Minerals: CASSITERITE
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1366 : layer of purple crystals (12 cm)
    Minerals: AMETHYST (quartz)
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1368 : purple crystals on feldsparbearing rock
    Minerals: FLUORITE FELDSPAR
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1387 : black spots (5 mm) on yellow quartz
    Minerals: CASSITERITE QUARTZ
    Year: 1936
    Country: Congo (RDC)
  • Sample n°1388 : cassiterite crystal (1 cm) on saccharoidal quartz
    Minerals: CASSITERITE
    Year: 1936
    Country: Congo (RDC)
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