This specimen is Granite. Granite is an igneous rock composed mostly of quartz, feldspar, mica, and plagioclase. The specimen measures 10.1 cm x 6.9 cm x 3.2 cm.
- Catalog Number:
- 402935
- Object/Specimen Description:
- Specimen Count:
- 1
- Locality:
- US Great Lakes (MN, WI, IL, IN, OH, MI)
- Collecting Locality:
- North America, United States, Minnesota