Mineralogy Database

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87 samples matching your criteria

  • Sample n°6818 : massive pink, covered by black oxides
    Minerals: RHODONITE PYROLUSITE
    Year: 1954
    Country: United Kingdom
  • Sample n°6819 : granular black mass on gangue material
    Minerals: BRAUNITE PYROLUSITE BARYTE
    Year: 1954
    Country: Germany
  • Sample n°8317 : massive
    Minerals: PYROLUSITE
    Year:
    Country: Congo (RDC)
  • Sample n°8318 : black fibrous massive material
    Minerals: PYROLUSITE
    Year: 1959
    Country: Congo (RDC)
  • Sample n°8971 : black debris
    Minerals: PYROLUSITE
    Year: 1960
    Country: Congo (RDC)
  • Sample n°9316 : bright black pyrolusite in pegmatite
    Minerals: PYROLUSITE QUARTZ
    Year: 1961
    Country: Rwanda
  • Sample n°9319 : black coatings on large block of quartz
    Minerals: PYROLUSITE QUARTZ
    Year: 1961
    Country: Rwanda
  • Sample n°10135 : black concretionary mass in yellow ochre
    Minerals: PYROLUSITE
    Year: 1964
    Country: Tunisia
  • Sample n°10650 : sample with golden-yellow uranophane-beta, autunite as impregnations, pyrolusite dendrites, in pegmatite
    Minerals: URANOPHANE-BETA AUTUNITE PYROLUSITE
    Year: 1965
    Country: Rwanda
  • Sample n°10724 : massive ore
    Minerals: PYROLUSITE
    Year: 1965
    Country: Congo (RDC)
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