Chert Photos
Cochise College        
Photos of Rocks         Sedimentary Rocks
Virtual Geology Museum       Hall of Rocks

Geology Home Page              

Roger Weller, geology instructor

wellerr@cochise.edu    copyright 2007-R.Weller

gray chert-2
closer view
Joplin, Missouri

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