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 2011

andesite porphyry-1
Boulder County, Colorado
 

andesite                                                                                                                                     030a

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

Specimen is from the Cochise College collection
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