Mineralogy, mineral chemistry, and paragenesis of gold, silver, and base-metal ores of the North Amethyst vein system, San Juan Mountains, Mineral County, Colorado 
by Nora K. Foley ... [et al.]. 
 - Washington  U.S. G.P.O.  1993. 
 - iv, 39 p.  ill.  29 cm. 
 - U.S. Geological Survey professional paper  1537 .
<br/><br/>Includes bibliographical references (p. 37-39). 
<br/><br/><label>LCCN: </label>92040595  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gold ores--Geology--Colorado--Mineral County.<br/>Ore deposits--Colorado--Mineral County.
<br/><br/><label>LC Class. No.: </label>QE390.2.G65  / M56 1993 
<br/><br/><label>Dewey Class. No.: </label>553.41/09788/38 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 19.16:1537