• Exhibition Text

    • This harzburgite is one of the lowermost layers of the Stillwater Complex.  It is composed of green olivine and black orthopyroxene (bronzite).  The white mineral is plagioclase (labradorite), which crystallized in the interstices after the olivine and bronzite had accumulated.

      AMNH collection

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  • For Educators

    • Topic: Earth Science

      Subtopic: Minerals and Resources

      Keywords: Olivine, Geology, Stratigraphic, Plagioclase, Stillwater County (Mont.), Mineralogy

      Audience: General