Clays and Clay Minerals, Volume 8 contains the proceedings of the Eighth National Conference on Clays and Clay Minerals held in Norman, Oklahoma, on October 11-14, 1959 and sponsored by the Clay Minerals Committee of the National Academy of Sciences—National Research Council in cooperation with the University of Oklahoma. The papers explore research findings as well as problems related to clays and clay minerals in many diverse disciplines. This volume is comprised of 22 chapters and begins with a description of clays and clay minerals present in Wichita Mountain area, southwestern Oklahoma, followed by an analysis of the correlations of kaolinite crystallinity with chemical and physical properties. An evaluation of the amount and distribution of montmorillonite in some kaolins found in Georgia and South Carolina is then presented. Subsequent chapters focus on the geology, mineralogy, and genesis of selected fireclays from Latah County, Idaho; chemical weathering of layer silicate clays in loess-derived Tama silt loam of southwestern Wisconsin; possible uses of clay minerals in the search for oil; and a geochemical method for determining paleosalinity. The final chapter presents the results of a mineralogical analysis of soil clays involving vermiculite-chlorite-kaolinite differentiation. This book will appeal to geologists, geochemists, and mineralogists.