Geology of microcrystalline silica (Tripoli) deposits, southernmost Illinois
By: Richard B. Berg, John M. Masters.
Contributors: Masters, John M.; Illinois State Geological Survey.
Series: Circular / Illinois State Geological Survey ;; 555; Circular (Illinois State Geological Survey) ;; 555.
Publisher: Illinois State Geological Survey
Published: 1994
Place of publication: Champaign, Ill
Language: eng
Number of pages: 89
Subjects: Geology -- Illinois -- Alexander County.; Geology -- Illinois -- Union County.; Tripoli (Mineral) -- Illinois -- Alexander County.; Tripoli (Mineral) -- Illinois -- Union County.; Hydrothermal alteration -- Illinois.
Notes: Includes bibliographical references (p. 59-60).