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  • Exhibition Text

    • This coal contains metamorphosed organic matter (carbon) and brassy-colored iron sulfide minerals formed from decaying plants.  The plants were buried in swamps and marshes to form peat, and latter converted to coal by heat and pressure resulting from deeper burial.

      Donated by Pittsburgh Research Center, Bureau of Mines, Pittsburgh, Pennsylvania

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  • For Educators

    • Topic: Earth Science

      Subtopic: Minerals and Resources

      Keywords: Carbon cycle (Biogeochemistry), Coal

      Audience: General

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