Hexagonal-Trigonal System
Cochise College    
Crystals and Crystal Models
 
Geology Home Page                      

Roger Weller, geology instructor

wellerr@cochise.edu
copyright 2010-R.Weller

 
crystals of minerals
quartz-hexagonal dipyramid-1

beta-quartz



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