Mineralogy Database

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292 samples matching your criteria

  • Sample n°9209 : small black needles in pink altered schist
    Minerals: TOURMALINE
    Year:
    Country: Rwanda
  • Sample n°9510 : black tourmaline in saccharoidal albite
    Minerals: TOURMALINE
    Year:
    Country: Rwanda
  • Sample n°9839 : carbonatite with black tourmaline
    Minerals: TOURMALINE CALCITE
    Year: 1962
    Country: Congo (RDC)
  • Sample n°9858 : sample with golden-yellow ranunculite nodules, white to yellow mica-like threadgoldite, phosphuranylite as yellow powder, grey apatite
    Minerals: RANUNCULITE THREADGOLDITE APATITE PHOSPHURANYLITE TOURMALINE
    Year:
    Country: Congo (RDC)
  • Sample n°9895 : grey fibrous crystals (15 cm) in quartz
    Minerals: TOURMALINE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°9983 : pink cordierite crystals (6 mm) and small black tourmaline crystals in block (6 cm)
    Minerals: CORDIERITE TOURMALINE
    Year: 1963
    Country: Norway
  • Sample n°10292 : brown needles (1-2 cm) in green muscovite-rich blocks (7-15 cm)
    Minerals: MUSCOVITE TOURMALINE
    Year:
    Country: Rwanda
  • Sample n°10314 : black crystals in quartzite (12 cm), graphic texture
    Minerals: TOURMALINE MUSCOVITE
    Year:
    Country: Rwanda
  • Sample n°10366 : prismatic crystal (7 cm), altered to muscovite
    Minerals: TOURMALINE MUSCOVITE
    Year:
    Country: Rwanda
  • Sample n°10409 : fragment (6 cm) with green needles and emerald-like material
    Minerals: BERYL TOURMALINE
    Year:
    Country: Rwanda
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