opal-fluorescent
Cochise College    
Geology Home Page
Fluorescent Minerals

Roger Weller, geology instructor

wellerr@cochise.edu 
copyright 2008-R.Weller

 
opal-1
 


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

Specimen courtesy of the Huachuca Gem and Mineral Club