Rocks and Minerals

Andover has large amounts of the following rocks and minerals:

• Slate is found throughout Andover, especially in West Andover
• Horneblende diorite, also known as rabbit rock, is found east of Philips Academy and north of Clay Pits Hill.
• Muscovite biotite granite is found throughout Andover.
• Diabasic diorite is found in West Andover near River Road.

See

• Physical Geography, Geology and Palentology of Essex County, Massachusettsby John Henry Sears, pages 98, 149, 168, and 173.

--Eleanor 16:57, June 8, 2007 (EDT)

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