Mineralogy Database

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58 samples matching your criteria

  • Sample n°8855 : mixed phosphates with manganese minerals
    Minerals: CRYPTOMELANE HETEROSITE PHOSPHOSIDERITE
    Year:
    Country: Rwanda
  • Sample n°10662 : brown bundles and fibro-radial layers on manganese oxides
    Minerals: FRONDELITE CRYPTOMELANE
    Year: 1965
    Country: Rwanda
  • Sample n°10725 : stalactitic aggregates
    Minerals: CRYPTOMELANE MANGANITE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10726 : velvety nodules
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10727 : nodules
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10731 : massive or dendritic
    Minerals: CRYPTOMELANE
    Year: 1965
    Country: Congo (RDC)
  • Sample n°10735 : cryptomelane nodules on mineralised conglomerate
    Minerals: CRYPTOMELANE
    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°12138 : earthy blocks
    Minerals: CRYPTOMELANE
    Year: 1969
    Country: Morocco
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