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

wellerr@cochise.edu    copyright 2011   


black obsidian-C
A fresh conchoidal chip on weathered obsidian
 


obsidian                                                                                                                                             3a

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