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

wellerr@cochise.edu    copyright 2011   

 

porphyry, cut-9
closer view


porphyry                                                                                                                                       1600
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.