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

wellerr@cochise.edu    copyright 2011

 

basalt with olivine-1
San Carlos Indian Reservation, Arizona

This specimen came from a classic location: a small lava flow on the San Carlos
Indian Reservation west of Safford, Arizona.  This location is a prime source of
gem grade olivine (peridot).

 

basalt                                                                                                                                              az1

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