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

Roger Weller, geology instructor

wellerr@cochise.edu
copyright 2008-R.Weller

 
wooden crystal model
twin -model # 130-2
 (1010)  (1011)  (0111)  (6151) 
seen in quartz

 

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