Hexagonal-Trigonal System
Cochise College    
Crystals and Crystal Models 
Virtual Geology Museum      Hall of Minerals

Geology Home Page                      

Roger Weller, geology instructor

wellerr@cochise.edu
copyright 2010-R.Weller
 

crystals of minerals
corundum (sapphire) hexagonal dipyramids-1



corundum
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Just credit photo to R.Weller/Cochise College.