Mineralogy Database

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20 samples matching your criteria

  • Sample n°231 : crust of black lamellae
    Minerals: HORNBLENDE
    Year: 1901
    Country: Congo (RDC)
  • Sample n°1033 : rounded fragment
    Minerals: EPIDOTE HORNBLENDE FELDSPAR QUARTZ
    Year: 1938
    Country: Congo (RDC)
  • Sample n°4668 : double-terminated black prismatic crystal (3 cm)
    Minerals: HORNBLENDE
    Year:
    Country: Rwanda
  • Sample n°6531 : black crystals (cm) disseminated in block (7 cm)
    Minerals: HORNBLENDE
    Year: 1949
    Country: Uzbekistan
  • Sample n°6894 : black prismatic crystal (3 cm) in black amphibolite
    Minerals: HORNBLENDE
    Year: 1954
    Country: Norway
  • Sample n°6895 : black crystals (cm) in brown altered block, and isolated crystals (3 cm)
    Minerals: HORNBLENDE
    Year: 1954
    Country: Czech Republic
  • Sample n°8018 : black tabular crystals in rock with syenitic texture
    Minerals: HORNBLENDE
    Year:
    Country: Congo (RDC)
  • Sample n°11170 : black crystalline volcanic bomb (6 cm)
    Minerals: HORNBLENDE BIOTITE
    Year: 1966
    Country: Germany
  • Sample n°11172 : granular volcanic bombs (4 and 7 cm)
    Minerals: OLIVINE AUGITE HORNBLENDE
    Year: 1966
    Country: Germany
  • Sample n°11173 : black crystals and plates (1-5 cm)
    Minerals: AUGITE BIOTITE HORNBLENDE
    Year: 1966
    Country: Germany
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