Mica Photos       
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2010-R.Weller 

 
biotite crystals in pegmatite-2
Biotite is K(Mg,Fe)3AlSi3O10(OH)2

 


mica                                                                                                                                               2064
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.