Mineralogy Database

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91 samples matching your criteria

  • Sample n°17965 : octahedral crystals in matrix
    Minerals: MAGNETITE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°17006 : irregular crust
    Minerals: CRYPTOMELANE
    Year:
    Country: Congo (RDC)
  • Sample n°18725 : elongated crystals
    Minerals: PYROLUSITE
    Year: 2019
    Country: Congo (RDC)
  • Sample n°18726 : crystals in rock matrix
    Minerals: GARNET
    Year: 2019
    Country: Congo (RDC)
  • Sample n°19721 : purple coating on Mn oxide matrix
    Minerals: VARISCITE
    Year: 2022
    Country: Congo (RDC)
  • Sample n°19794 : continuous coating on large block
    Minerals: MANGANITE
    Year: 2022
    Country: Congo (RDC)
  • Sample n°20258 : purple coating on Mn oxide substrate
    Minerals: VARISCITE
    Year:
    Country: Congo (RDC)
  • Sample n°20339 : continuous coating on irregular substrate
    Minerals: MANGANITE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°20340 : core section, with high macroporosity
    Minerals: CRYPTOMELANE
    Year: 2017
    Country: Congo (RDC)
  • Sample n°20341 : purple coating
    Minerals: VARISCITE
    Year: 2017
    Country: Congo (RDC)
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