gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1985.049.350.25 Short Communications Some Alumina and Silica in Weathered Ilmenite Grains is Present in Clay Minerals—A Response to Frost et al. (1983) Anand R. R. Gilkes R. J. Soil Science and Plant Nutrition Group, School of Agriculture, University of Western Australia, Nedlands, WA 6009, Australia 3 1985 49 350 141 145 15 6 1984 Copyright © 1985, The Mineralogical Society 1985 alumina silica ilmenite clay minerals Western Australia