Mineralogy Database

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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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