Mineralogy Database

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91 samples matching your criteria

  • Sample n°13200 : thick crust
    Minerals: CRYPTOMELANE
    Year: 1974
    Country: Congo (RDC)
  • Sample n°13201 : massive
    Minerals: CRYPTOMELANE
    Year: 1974
    Country: Congo (RDC)
  • Sample n°13202 : thick dull black coating, nodular
    Minerals: PYROLUSITE
    Year: 1974
    Country: Congo (RDC)
  • Sample n°13381 : zoned nodules
    Minerals: CRYPTOMELANE
    Year:
    Country: Congo (RDC)
  • Sample n°13382 : ore nodules with metallic layers
    Minerals: MANGANITE
    Year:
    Country: Congo (RDC)
  • Sample n°13927 : small crystals with metallic lustre
    Minerals: MANGANITE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°13928 : layers of needles with metallic lustre
    Minerals: MANGANITE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°13929 : manganese-bearing laterite
    Minerals: GOETHITE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°13930 : pink-purple block
    Minerals: VARISCITE PYROLUSITE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°13931 : manganite crystals (cf. specimen RGM 13382)
    Minerals: PYROLUSITE MANGANITE
    Year: 1982
    Country: Congo (RDC)
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