Studies of Some Vermiculite-Type Clay Minerals*

John C. Hathaway
U.S. Geological Survey, Beltsville, Md.
* Publication authorized by the Director, U.S. Geological Survey.

Abstract: X-ray and electron-diffraction studies, and differential thermal analyses of the clay fraction of some soils from Virginia, New Jersey, and Wisconsin indicate an abundance of minerals resembling vermiculite. Measurements of the 060 spacing for these minerals give values lower than those obtained for trioctahedral vermiculites. It is suggested that the minerals studied are dioctahedral forms, which have resulted from the weathering of muscovite-type micas.

Clays and Clay Minerals; 1954 v. 3; no. 1; p. 74-86; DOI: 10.1346/CCMN.1954.0030108
© 1954, The Clay Minerals Society
Clay Minerals Society (www.clays.org)