Frondel, Clifford  <br/><br/>
System of mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1937-1892  

 - 17th ed.  
 - New York:   John Wiley and Sons, Inc.,   1962 
 - xii, 334p.  
<br/><br/> Vol. III, Silica Minerals  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy 
<br/><br/><label>Subjects--Index Terms: </label>Polymorphs  
<br/><br/><label>Universal Decimal Class. No.: </label>549  / K2.3