Mineralogy Database

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2 samples matching your criteria

  • Sample n°13894 : geode (10 cm), with some small black goethite crystals
    Minerals: GOETHITE AMETHYST (quartz)
    Year: 1981
    Country: Madagascar
  • Sample n°20430 : coarse-crystalline material
    Minerals: COLUMBITE
    Year: 2025
    Country: Madagascar