Feldspar Photos  
Cochise College               
Photos of Minerals
Geology Home Page

Roger Weller, geology instructor

wellerr@cochise.edu     copyright 2016-R.Weller

anorthite crystal
Anorthite is the calcium end member of the plagioclase feldspars.  Large crystals
of anorthite are rarely found and the mineral is rather dull and uninteresting. 
However, it turns out that a large portion of the Moon's surface is made of anorthite. 
This specimen of anorthite is only about 1.5 centimeters.


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