Andesite Photos
Cochise College
Photos of Rocks        Igneous Rocks
Virtual Geology Museum
Hall of Rocks
Geology Home Page
Roger Weller, geology instructor                       

wellerr@cochise.edu    copyright 2007

hornblende andesite porphyry-2
closer view
Judith Basin, Montana

Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.

Specimen is from the Cochise College collection
rock121