Shortcut Navigation:



  • Exhibition Text

    • Dense metamorphic rocks, such as granulite and gneiss, make up most of the lower crust. This sample was transported to the surface by erupting lava. It is made up of the minerals gray quartz, white feldspar, purple garnet, and white sillimanite, and comes from a depth of 12 to 26 kilometers.

      Provided by Prof. Roberta Rudnick, Harvard University, Cambridge, Massachusetts

      Show more
  • For Educators

    • Topic: Earth Science

      Subtopic: Minerals and Resources

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

      Audience: General

American Museum of Natural History

Central Park West at 79th Street
New York, NY 10024-5192
Phone: 212-769-5100

Open daily from 10 am-5:45 pm
except on Thanksgiving and Christmas
Maps and Directions

Enlighten Your Inbox

Stay informed about Museum news and research, events, and more!