Mineralogy Database

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Hierarchical browse (Geography) >> USA >> Montana >> Butte

3 samples matching your criteria

• Sample n°6670 : black block (10 cm)
  Minerals: ENARGITE

  Year: 1954

  Country: USA
• Sample n°6710 : block with black fibrous concretionary layers
  Minerals: PYROLUSITE

  Year: 1954

  Country: USA
• Sample n°6720 : black block (10 cm) with yelow metallic chalcopyrite
  Minerals: COVELLITE CHALCOPYRITE

  Year: 1954

  Country: USA

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