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Quartz (#9)

Quartz (#9)

  • About

    • This specimen is an example of a typical mineral that formed in a simple pegmatite environment.

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  • Exhibition Text

    • Simple Pegmatites: Typical Minerals
      Magma cools and crystallizes in a complex manner. During late stages in cooling the last magmatic fluids often crystallize into an exceptionally coarse-grained igneous rock called granite pegmatite. Pegmatites of granitic composition are the most common; minerals with large-sized crystals typically formed in such an environment are quartz, potassium feldspar (microcline and orthoclase), and muscovite and biotite mica.

  • Collection Information

    • Smoky Quartz SiO2

      Auburn, Maine

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