Mineralogy Database

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327 samples matching your criteria

  • Sample n°536 : black crystals in quartz fragments
    Minerals: TOURMALINE QUARTZ
    Year: 1913
    Country: Congo (RDC)
  • Sample n°560 : zoned block (pink, blue, yellow)
    Minerals: CHALCEDONY (quartz)
    Year: 1913
    Country: Congo (RDC)
  • Sample n°593 : gold-bearing quartz vein
    Minerals: QUARTZ GOLD
    Year: 1914
    Country: Congo (RDC)
  • Sample n°594 : aggregates in quartz vein
    Minerals: PYRITE QUARTZ
    Year: 1914
    Country: Congo (RDC)
  • Sample n°634 : specular
    Minerals: HEMATITE
    Year: 1925
    Country: Congo (RDC)
  • Sample n°635 : grey fibres in quartz
    Minerals: TREMOLITE QUARTZ
    Year: 1925
    Country: Congo (RDC)
  • Sample n°639 : massive, grey
    Minerals: HEMATITE
    Year: 1917
    Country: Congo (RDC)
  • Sample n°645 : pink pisolithic bauxite (12 cm)
    Minerals: unspecified
    Year: 1916
    Country: Congo (RDC)
  • Sample n°646 : stalactites (15 cm)
    Minerals: CALCITE
    Year:
    Country: Congo (RDC)
  • Sample n°647 : grey fibres in quartz (10 cm)
    Minerals: TREMOLITE QUARTZ
    Year: 1916
    Country: Congo (RDC)
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