Holmes, Ricahrd Walker <br/><br/>
Mines and minerals of the Great American Rift (Colorado-New Mexico) / 
Richard Walker Holmes and Marianna B. Kennedy. 
 - New York :  Van Nostrand Reinhold,  c1983. 
 - xii, 332 pages. : illustrations. 
<br/><br/> Includes bibliography and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources--Colorado<br/>Mines and mineral resources--New Mexico