Mineralogy Database

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91 samples matching your criteria

  • Sample n°13932 : nodules
    Minerals: CRYPTOMELANE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°13933 : coral-like
    Minerals: PYROLUSITE
    Year: 1982
    Country: Congo (RDC)
  • Sample n°17925 : stalactitic group
    Minerals: PYROLUSITE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17926 : crust with coarsely undulating surface
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17927 : purple coating on manganese oxide substrate
    Minerals: VARISCITE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17928 : botryoidal plate
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17929 : complex crust
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17930 : fibrous layered crust
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17931 : stalactitic deposit
    Minerals: PYROLUSITE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17932 : porous aggregate
    Minerals: MANGANESE OXIDES
    Year: 2017
    Country: Congo (RDC)
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