Mineralogy Database

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