• Exhibition Text

    • The upper crust is made of low-density granitic rocks. This one is composed of gray quartz, white feldspar, brown flakes of mica, and black needles of hornblende.

      Donated by New England Stone Industries, Inc., Esmond, Rhode Island

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  • For Educators

    • Topic: Earth Science

      Subtopic: Minerals and Resources

      Keywords: Granodiorite, Geology, Earth (Planet)--Crust, Minerals

      Audience: General