Mineralogy Database

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58 samples matching your criteria

  • Sample n°12795 : mixed black ores
    Minerals: HAUSMANNITE CRYPTOMELANE
    Year: 1972
    Country: South Africa
  • Sample n°13200 : thick crust
    Minerals: CRYPTOMELANE
    Year: 1974
    Country: Congo (RDC)
  • Sample n°13201 : massive
    Minerals: CRYPTOMELANE
    Year: 1974
    Country: Congo (RDC)
  • Sample n°13381 : zoned nodules
    Minerals: CRYPTOMELANE
    Year:
    Country: Congo (RDC)
  • Sample n°13932 : nodules
    Minerals: CRYPTOMELANE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°13952 : earthy brown and rust-coloured block (10 cm)
    Minerals: CRYPTOMELANE
    Year: 1982
    Country: Rwanda
  • Sample n°14060 : block of mixed phosphates (10 cm)
    Minerals: FRONDELITE CRYPTOMELANE PHOSPHOSIDERITE
    Year:
    Country: Congo (RDC)
  • Sample n°14469 : dark bluish grey veins of acicular crystals, in weathered substrate
    Minerals: SCHOLZITE CRYPTOMELANE
    Year: 1987
    Country: Australia
  • Sample n°17276 : massive
    Minerals: CRYPTOMELANE
    Year: 1959
    Country: Congo (RDC)
  • Sample n°17277 : massive
    Minerals: CRYPTOMELANE
    Year: 1959
    Country: Congo (RDC)
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