Mineralogy Database

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31 samples matching your criteria

  • Sample n°14049 : sample with yellow tabular phosphuranylite crystals, tabular meta-uranocircite crystals (square shapes), rosettes of orange masuyite fibres
    Minerals: MASUYITE META-URANOCIRCITE PHOSPHURANYLITE
    Year: 1984
    Country: Gabon
  • Sample n°15854 : yellowish green powdery material
    Minerals: FRANCEVILLITE
    Year:
    Country: Gabon
  • Sample n°18351 : porous layered crust
    Minerals: MANGANESE OXIDES
    Year: 2017
    Country: Gabon
  • Sample n°18352 : layered crust
    Minerals: MANGANESE OXIDES
    Year: 2017
    Country: Gabon
  • Sample n°18353 : fragments with associated ferruginous material
    Minerals: MANGANESE OXIDES
    Year: 2017
    Country: Gabon
  • Sample n°18354 : rounded aggregates
    Minerals: MANGANESE OXIDES
    Year: 2017
    Country: Gabon
  • Sample n°19501 : abundant elongated crystals in cavities in Mn oxide matrix
    Minerals: RHODOCHROSITE
    Year: 2021
    Country: Gabon
  • Sample n°19509 : metallurgic manganese-silica alloy
    Minerals: unspecified
    Year:
    Country: Gabon
  • Sample n°19510 : electrolytic manganese
    Minerals: unspecified
    Year:
    Country: Gabon
  • Sample n°20414 : unidentified secondary minerals in arkosic matrix
    Minerals: unidentified
    Year:
    Country: Gabon
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