Mica Photos       
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2010-R.Weller 

 
biotite book-4
Biotite is K(Mg,Fe)3AlSi3O10(OH)2
Biotite is also known as black mica.
 


mica                                                                                                                                               2193
Photo is copyright free for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.