Twinned Crystals-Line Drawings                         
Cochise College                                                                                        
Crystals and Crystal Models  
Twinned Crystals  

Geology Home Page                      

Roger Weller, geology instructor ( wellerr@cochise.edu )
copyright 2017-R.Weller    last edited:  8/24/17 

 
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Illustration is free for non-commercial educational uses. 
Just credit photos to R.Weller/Cochise College.