Obsidian Photos
Cochise College
Photos of Rocks       

Igneous Rocks
Geology Home Page
Roger Weller, geology instructor                       

wellerr@cochise.edu    copyright 2011 


spherulitic obsidian-1
Salton Sea, California
Specimen is 3 cm.

 

obsidian                                                                                                                                      7-02a

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