Mineralogy Database

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82 samples matching your criteria

  • Sample n°6714 : purple-grey blocks with conchoidal fracture
    Minerals: MANGANESE OXIDES
    Year: 1954
    Country: Germany
  • Sample n°6750 : black botryoidal block (5 cm)
    Minerals: MANGANESE OXIDES
    Year: 1954
    Country: India
  • Sample n°7041 : black massive fragments
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°7042 : massive
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°7112 : dark brown earthy block
    Minerals: MANGANESE OXIDES
    Year: 1951
    Country: Congo (RDC)
  • Sample n°7156 : mixed ore
    Minerals: BRACKEBUSCHITE MOTTRAMITE MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°7181 : dendrites on limestone
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°9958 : green and black impregnations in white phosphates (montebrasite)
    Minerals: MONTEBRASITE MANGANESE OXIDES BARBOSALITE
    Year: 1963
    Country: Rwanda
  • Sample n°10585 : altered beige and purplish grey block (15 cm)
    Minerals: BISMUTITE MANGANESE OXIDES
    Year: 1964
    Country: Congo (RDC)
  • Sample n°10732 : black impregnations in pegmatite (level 1050-1060)
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
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