Mössbauer Effect Studies of Iron in Kaolin. I. Structural Iron

S. A. Fysh1, J. D. Cashion and P. E. Clark2
Department of Physics, Monash University, Clayton, Victoria 3168, Australia
1 Now at BHP Co. Ltd., Central Research Laboratories, P.O. Box 188, Wallsend, New South Wales 2287, Australia.
2 Now at Department of Applied Physics, Capricornia I.A.E., Rockhampton, Queensland, 4700 Australia.

Abstract: 57Fe Mössbauer spectra of a cleaned Weipa, Australia, kaolin showed that a considerable fraction of the structural iron exhibits paramagnetic relaxation between 4°K and 300°K the first time that this has been observed for ferric ions in a mineral. The sample also contained a very fine particle ferric oxide/oxyhydroxide phase, probably of secondary origin.

Key Words: Iron • Kaolinite • Mössbauer effect • Paramagnetism • Structural substitution

Clays and Clay Minerals; August 1983 v. 31; no. 4; p. 285-292; DOI: 10.1346/CCMN.1983.0310406
© 1983, The Clay Minerals Society
Clay Minerals Society (www.clays.org)