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

wellerr@cochise.edu

 

Andesite
last edited:  6/19/17     number of photos:  29
Andesite is a fine-grained (aphanitic), volcanic,
intermediate silicic igneous rock with a composition
part way between basalt and rhyolite. 
It is commonly porphyritic.

 

photos                                                                                              
andesite, porphyritic:  1  2  3  4  5  6 
andesite breccia:  1  2
hornblende andesite:  1  2  3  4
andesite porphyry:  1  2  3  4  5  6
andesite, misc.:  1  2  3  4  5  6  7  8  9  10 
11

Photos are copyright free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.
copyright 2016-R.Weller

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