Rock-Forming Minerals, Volume 4A/  framework silicates - feldspars 
Deer,William Alexander 
 - 2 
 - London:  Geological Society,  2001. 
 - 972 
<br/><br/><label>ISBN: </label>1862390819 
<br/><br/><label>Dewey Class. No.: </label>549.6  / DEE/R