Obsidian
Photos Cochise College
Photos of Rocks Igneous Rocks
Virtual Geology Museum Hall of Rocks
Geology Home Page
Roger Weller, geology instructor
Obsidian
Photos wellerr@cochise.edu copyright 2007
dull, flow banded obsidian-4
closer view
Salton Sea, California
Photo is copyright free for
non-commercial educational uses.
Just credit photo to R.Weller/Cochise
College.