Mineralogy Database

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8 samples matching your criteria

  • Sample n°6928 : black earthy block (6 cm)
    Minerals: DUFRENITE
    Year: 1954
    Country: USA
  • Sample n°9718 : greenish reniform fibrous phosphates
    Minerals: DUFRENITE
    Year:
    Country: Rwanda
  • Sample n°9915 : purple block of mixed phosphates (12 cm)
    Minerals: DUFRENITE HETEROSITE PURPURITE
    Year: 1972
    Country: Rwanda
  • Sample n°9926 : scoriaceous block of mixed phosphates (10 cm)
    Minerals: HETEROSITE DUFRENITE
    Year:
    Country: Rwanda
  • Sample n°13671 : block of oxides covered with mixed phosphates
    Minerals: DUFRENITE APATITE MUSCOVITE PHLOGOPITE
    Year: 1979
    Country: Australia
  • Sample n°13702 : crystals on debris (2 cm)
    Minerals: DUFRENITE SEGELERITE COLLINSITE JAHNSITE TOURMALINE
    Year: 1980
    Country: USA
  • Sample n°13857 : sample with meta-autunite, grey-brown fibro-radial dufrenite nodules with black centre, smoky quartz
    Minerals: META-AUTUNITE DUFRENITE QUARTZ
    Year: 1980
    Country: Portugal
  • Sample n°18856 : coarse-fibrous band
    Minerals: DUFRENITE
    Year: 2019
    Country: Rwanda
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