Mineralogy Database

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8 samples matching your criteria

  • Sample n°8998 : black prismatic crystals in amphibolite
    Minerals: HOLMQUISTITE
    Year: 1961
    Country: Congo (RDC)
  • Sample n°10515 : blue amphibolite (12 cm) with sulfides
    Minerals: HOLMQUISTITE PYRITE
    Year:
    Country: Rwanda
  • Sample n°10687 : blue amphibolite (30 cm)
    Minerals: HOLMQUISTITE
    Year:
    Country: Rwanda
  • Sample n°10688 : blue amphibolite (30 cm)
    Minerals: HOLMQUISTITE
    Year:
    Country: Rwanda
  • Sample n°10701 : pale purple amphibolite, being altered to clay
    Minerals: HOLMQUISTITE
    Year: 1965
    Country: Rwanda
  • Sample n°13355 : purple amphibolite (14 cm)
    Minerals: HOLMQUISTITE
    Year:
    Country: Rwanda
  • Sample n°13356 : metallic spots on blue amphibolite (8 cm)
    Minerals: HOLMQUISTITE PYRITE
    Year:
    Country: Rwanda
  • Sample n°17563 : coarse fibrous aggregate
    Minerals: HOLMQUISTITE
    Year: 2017
    Country: Rwanda
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