Mineralogy Database

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91 samples matching your criteria

  • 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)
  • Sample n°10740 : concretionary material
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10741 : red to purple crusts on manganese oxides
    Minerals: STRENGITE VARISCITE MANGANESE OXIDES
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10742 : fine-grained metallic ore
    Minerals: MANGANITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10743 : block with metallic crystalline material in cavities
    Minerals: MANGANITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10744 : massive, with some manganite
    Minerals: PYROLUSITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10746 : massive
    Minerals: PYROLUSITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°11994 : core samples of ore deposit
    Minerals: PYROLUSITE
    Year: 1969
    Country: Congo (RDC)
  • Sample n°13199 : large stalactitic block
    Minerals: PYROLUSITE
    Year: 1974
    Country: Congo (RDC)
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