Brobst, Donald Albert,  1925- <br/><br/>
X-ray mineralogy of the Parachute Creek Member, Green River Formation, in the Northern Piceance Creek Basin, Colorado / 
by Donald A. Brobst and Jerry D. Tucker 
 - Washington :  United States Government Printing Office,  1973 
 - iv, 53 p. :  ill. ;  29 cm. 
 - Geological Survey professional paper ;  803 .
<br/><br/>Bibliography: p. 52-53 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogy--Colorado--Piceance Creek Basin<br/>Geology, Stratigraphic--Tertiary<br/>Oil-shales--Colorado--Piceance Creek Basin<br/>X-rays--Diffraction
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Green River Formation
<br/><br/><label>Dewey Class. No.: </label>549.978815