Mineralogy Database

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4831 samples matching your criteria

  • Sample n°10730 : fine-grained crystallisation in geodes
    Minerals: MANGANITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10731 : massive or dendritic
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10732 : black impregnations in pegmatite (level 1050-1060)
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°10733 : veins in rock
    Minerals: PYROLUSITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10734 : radial concretions with metallic lustre
    Minerals: MANGANITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10735 : cryptomelane nodules on mineralised conglomerate
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10736 : kaolinite and manganse oxides, including manganite
    Minerals: KAOLINITE MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°10737 : cavity in manganese ore (30-40 m depth)
    Minerals: KAOLINITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10738 : purple crust covering manganese oxides
    Minerals: VARISCITE MANGANESE OXIDES
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10739 : concretionary material, covered with black coatings
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
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