Mineralogy Database

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87 samples matching your criteria

  • Sample n°673 : massive
    Minerals: PYROLUSITE
    Year: 1926
    Country: Congo (RDC)
  • Sample n°934 : massive black crust and impregnation
    Minerals: PYROLUSITE QUARTZ
    Year:
    Country: Congo (RDC)
  • Sample n°1693 : pyrolusite dendrite in relief on ferruginous substrate
    Minerals: PYROLUSITE
    Year:
    Country: Congo (RDC)
  • Sample n°1702 : manganese-bearing laterite
    Minerals: PYROLUSITE
    Year: 1966
    Country: Congo (RDC)
  • Sample n°1765 : pyrite concretions, geodes with bright malachite crystals
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°1766 : concretionary
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°1767 : masive
    Minerals: PYROLUSITE
    Year:
    Country: Congo (RDC)
  • Sample n°1768 : concretionary
    Minerals: PYROLUSITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°1769 : concretionary
    Minerals: PYROLUSITE
    Year:
    Country: Congo (RDC)
  • Sample n°1770 : concretionary
    Minerals: PYROLUSITE
    Year:
    Country: Congo (RDC)
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