Mineralogy Database

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7938 samples matching your criteria

  • Sample n°8649 : gneiss with prominent banding
    Minerals: BIOTITE FELDSPAR QUARTZ
    Year: 1960
    Country: Congo (RDC)
  • Sample n°3249 : coarse-crystalline quartz vein in granite, with powdery green material
    Minerals: QUARTZ SCORODITE
    Year: 1949
    Country: Congo (RDC)
  • Sample n°3251 : coarse-crystalline quartz vein in granite, with powdery green material
    Minerals: SCORODITE QUARTZ
    Year: 1949
    Country: Congo (RDC)
  • Sample n°2501 : cassiterite in coarse-crystalline quartz vein
    Minerals: CASSITERITE MUSCOVITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°2502 : block with prominent banding, variations in crystal size
    Minerals: MICA QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°12136 : core section with aliettite, described as interstatified talc-saponite, in dolomitic rock
    Minerals: ALIETTITE
    Year: 1969
    Country: Congo (RDC)
  • Sample n°6099 : red breccious rock with quartz cement
    Minerals: QUARTZ GOETHITE
    Year: 1957
    Country: Congo (RDC)
  • Sample n°6100 : diorite, with plagioclase and hornblende as principal components
    Minerals: PLAGIOCLASE HORNBLENDE
    Year: 1957
    Country: Congo (RDC)
  • Sample n°6138 : mylonite (amygdalite) with large albite crystals (var. oligoclase)
    Minerals: ALBITE
    Year: 1958
    Country: Congo (RDC)
  • Sample n°6142 : dolerite, dominated by plagioclase crystals in a mass of altered pyroxenes
    Minerals: PLAGIOCLASE PYROXENE
    Year: 1958
    Country: Congo (RDC)
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