Porphyry Photos
Cochise College
Photos of Rocks       

Igneous Rocks
Geology Home Page
Roger Weller, geology instructor                       

wellerr@cochise.edu    copyright 2011   

 

porphyry-3
Weathering has enhanced the color of the phenocrysts.


porphyry                                                                                                                                        1580
Photo is copyright free for non-commercial educational uses. 
Just credit photo to R.Weller/Cochise College.