01024cam a22002531 4500 gs 37000321 DLC 20260227111342.0 790608r1937uuuuilua s000 0 eng gs 37000321 (OCoLC)5047843 DLC TxCM DLC TN933 .G75 Grim, Ralph E. (Ralph Early), 1902- The mica in argillaceous sediments, by R. E. Grim, R. H. Bray and W. F. Bradley. Urbana, Printed by authority of the state of Illinois, 1937. 813-829 p. illus. Illinois State Geological Survey Report of investigations no. 44 At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey. "Reprinted from the American Mineralogist, v. 22, no. 7, pp. 813-829, July, 1937." Mica. Bray, Roger Hammond, 1898- joint author. Bradley, William Frank, 1908- joint author. 27406 27406