CONTENTS 



Page 



Foreword III 



Preface V 



Introduction, by Donald A. Brobst and Walden P. Pratt 1 



Mineral resource estimates and public policy, by V. E. McKelvey 9 



Crustal abundance of elements, and mineral reserves and resources, by Ralph L. 



Erickson 21 



Abrasives, by Robert E. Thaden 27 



Aluminum and bauxite, by Sam H. Patterson and John R. Dyni 35 



Antimony, by M. H. Miller 45 



Arsenic, by J. L. Gualtieri 51 



Asbestos, by Andrew F. Shride 63 



Barite, by Donald A. Brobst 75 



Beryllium, by Wallace R. Griffitts 85 



Bismuth, by J. W. Hasler, M. H. Miller, and R. M. Chapman 95 



Bitumen-bearing rocks, by W. B. Cashion 99 



Cadmium, by Helmuth Wedow, Jr. 105 



Chromium, by T. P. Thayer 111 



Clays, by John W. Hosterman 123 



Coal, by Paul Averitt 133 



Cobalt, by John S. Vhay, Donald A. Brobst, and Allen V. Heyl 143 



Construction stone, by Robert A. Laurence 157 



Copper, by Dennis P. Cox, Robert G. Schmidt, James D. Vine, Harold Kirkemo, 



Elizabeth B. Tourtelot, and Michael Fleischer 163 



Dlatomite, by David L. Durham 191 



Evaporites and brines, by George I. Smith, Charles L. Jones, William C. Cul- 



bertson, George E. Ericksen, and John R. Dyni 197 



Feldspar, by Frank G. Lesure 217 



Fluorine, by R. G. Worl, R. E. Van Alstine, and D. R. Shawe 223 



Gallium, germanium, and indium, by Robert A. Weeks 237 



Gem stones, by Robert E. Thaden 247 



Geothermal resources, by L. J. P. Muffler 251 



Gold, by Frank S. Simons and William C. Prinz 263 



Graphite, by Paul L. Weis 277 



Helium, by Dwight E. Ward and Arthur P. Pierce 285 



Iron, by Harry Klemic, Harold L. James, and G. Donald Eberlein 291 



Kyanite and related minerals, by Gilbert H. Espenshade 307 



Lead, by H. T. Morris, Allen V. Heyl, and Robert B. Hall 313 



Lightweight aggregates, by A. L. Bush 333 



Limestone and dolomite, by Harold A. Hubbard and George E. Ericksen 357 



Lithium, cesium, and rubidium — the rare alkali metals, by James J. Norton __ 365 



Magnesian refractories, by Alfred J. Bodenlos and T. P. Thayer 379 



Manganese, by John Van N. Dorr II, Max D. Crittenden, Jr., and Ronald G. 



Worl 385 



Mercury, by E. H. Bailey, A. L. Clark, and R. M. Smith 401 



Mica, by Frank G. Lesure ^■'■^ 



Molybdenum, by R. U. King, D. R. Shawe, and E. M. MacKevett, Jr. 425 



Nickel, by Henry R. Cornwall 437 



Niobium (columbium) and tantalum, by Raymond L. Parker and John W. 



Adams 443 



Nuclear Fuels: 



Introduction, by Warren I. Finch ^"^ 



Uranium, by Warren I. Finch, Arthur P. Butler, Jr., Frank C. Armstrong, 



and Albert E. Weissenborn ^^^ 



Thorium, by Mortimer H. Staatz and Jerry C. Olson 468 



