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Published January 1940 | public
Journal Article

Geological Features of Some Deposits of Bleaching Clay


Although there is now an extensive literature on the bleaching clays, not a great deal of material is to be found concerning the geological features of these deposits and their bearing on problems of exploration and development. At the same time, chemical and crystallographic research on the clay minerals during the past few years has laid a suitable foundation upon which to base conclusions of economic value drawn from field observations.

Additional Information

© 1940 American Institute of Mining and Metallurgical Engineers. Manuscript received at the office of the Institute Oct. 3, 1938; revised Oct. 31, 1939. Technical Publication No. 1139. The writers wish to express their appreciation for helpful comment and criticism to Messers. L. F. Clark, J. L. Gillson, T. Calvert Slater and H. D. Slosson, and also to thank Dr. P. F. Kerr, of Columbia University, for permission to refer to parts of an unpublished manuscript on the bleaching clays, and the Filtrol Corporation for permission to publish the results of field work done largely at Corporation expense.

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