Mineralogy Database

2 samples matching your criteria

• Sample n°99 : rhombohedrons (3-6 cm), cobalt-bearing
  Minerals: CALCITE

  Year: 1899

  Country: Congo (RDC)
• Sample n°183 : block with parallel crystals, partlially altered to illite, var. dipyre
  Minerals: MEIONITE

  Year: 1901

  Country: Tanzania