Mineralogy Database

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20 samples matching your criteria

  • Sample n°12930 : sample with yellow metatyuyamunite, substrate of white calcite crystals
    Minerals: METATYUYAMUNITE CALCITE
    Year: 1982
    Country: Mexico
  • Sample n°13740 : purple material in debris (2 cm)
    Minerals: CORUNDUM
    Year: 1980
    Country: Norway
  • 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)
  • 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°13934 : massive pink block (13 cm), var. thulite
    Minerals: ZOISITE
    Year: 1981
    Country: Norway
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