Mineralogy Database

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56 samples matching your criteria

  • Sample n°17950 : crust with fibrous basal part
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17951 : crust with irregular surface
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17952 : stalactite fragment
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17953 : contrasting crust on substrate
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17954 : crust with massive and highly porous parts
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17956 : columnar deposit, with stalactitic aspect
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17957 : large block with thick crust in complex pore system
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17958 : localised deposit with irregular surface, on more regular crust
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17959 : botryoidal crust with dull black surface
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17960 : large block, with one side covered by continuous manganite crystal coating
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
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