Mineralogy Database

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82 samples matching your criteria

  • Sample n°12792 : block with black manganese oxides and brown opal
    Minerals: MANGANESE OXIDES OPAL
    Year: 1972
    Country: South Africa
  • Sample n°12870 : black massive block with brown reniform surface
    Minerals: MANGANESE OXIDES
    Year: 1972
    Country: Congo (RDC)
  • Sample n°13195 : black block with purple crust and black powder (13 cm)
    Minerals: HETEROSITE PHOSPHOSIDERITE MANGANESE OXIDES
    Year: 1974
    Country: Rwanda
  • Sample n°14269 : white fibrous crystals on black block
    Minerals: MOTTRAMITE MENDIPITE MANGANESE OXIDES CALCITE MALACHITE
    Year: 1985
    Country: United Kingdom
  • Sample n°14295 : rock with manganese mineralisation
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°14296 : mineralised conglomerate
    Minerals: MANGANESE OXIDES
    Year:
    Country: Congo (RDC)
  • Sample n°15556 : dark brown earthy substrate with discontinuous green coatings and veins
    Minerals: MANGANESE OXIDES
    Year: 1998
    Country: Congo (RDC)
  • Sample n°17114 : slab of ore with radial and laminar patterns
    Minerals: MANGANESE OXIDES
    Year: 2014
    Country: Morocco
  • Sample n°17174 : nodular aggregate
    Minerals: MANGANESE OXIDES
    Year: 2015
    Country: Congo (RDC)
  • Sample n°17175 : thin stalactitic plate
    Minerals: MANGANESE OXIDES
    Year: 2015
    Country: Congo (RDC)
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