Pyrite (#25)

  • About

    • This specimen is an example of a mineral that formed in a mesothermal environment.

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  • Exhibition Text

    • Mesothermal
      Some hydrothermal fluids crystallize under moderate pressure and temperature conditions — between 200°C and 300°C — within Earth’s crust. Under such conditions, a mesothermal mineral-rich deposit is formed. Minerals most frequently found include enargite, bornite, tetrahedrite, tennantite, chalcocite, and other less common minerals. No single mineral is diagnostic of a mesothermal deposit.

  • Collection Information

    • Pyrite FeS2

      Central City, Colorado