Mineralogy Database

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3 samples matching your criteria

  • Sample n°6819 : granular black mass on gangue material
    Minerals: BRAUNITE PYROLUSITE BARYTE
    Year: 1954
    Country: Germany
  • Sample n°6880 : plates on block of iron ore (5 cm), var. thuringite
    Minerals: CHAMOSITE
    Year: 1954
    Country: Germany
  • Sample n°14016 : black plate (5 cm)
    Minerals: COVELLITE
    Year: 1983
    Country: Germany