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
rhombohedral group -model # 100-4
hexagonal scalenohedron  (2131)
seen in calcite



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