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Physical Characteristics of Commercial Sheet MUSCOVITE<br>in the Southeastern United States:<BR>USGS Professional Paper 225

This report includes a general discussion of commercial Muscovite in the Southeastern States, together with compilations, descriptions, and discussions of the tests and examinations. The present project, carried out jointly in 1945 and 1946 by the United States Geological Survey, the State of North Carolina, and the Tennessee Valley Authority, involved the preparation, electrical testing, color identification, and petrographic examination of 2,507 lots containing 237,764 pieces of mica. The test specimens were obtained from at least 850 deposits in the States of Alabama, Georgia, North Carolina, South Carolina, and Virginia. By Richard H. Jahns and Forrest W. Lancaster, 1950. 110 pages.




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