Magnetic Behavior of Some Biotite Samples from West Thrace, N.E. Greece

T. Anagnostopoulos, M. Calamiotou and C. Sideris
Nuclear Research Center “Democritos”, Athens, Greece
University of Athens, Greece

Abstract: The magnetic behavior of some biotite samples, from volcanic rocks of W. Thrace area, N.E. Greece, was studied in the temperature range from 85 to 270°K and compared with the chemical composition. The magnetization of the samples depends linearly on the applied field, and the magnetic susceptibility obeys the Curie law, showing a typical paramagnetic behavior which is due to Fe2+, Fe3+ and Mn2+ The effective magnetic moment was calculated from the structural formulas of the samples and deviation from the experimental values is discussed.

Clays and Clay Minerals; December 1973 v. 21; no. 6; p. 459-464; DOI: 10.1346/CCMN.1973.0210605
© 1973, The Clay Minerals Society
Clay Minerals Society (www.clays.org)