gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1981.44.333.10 Origin of Hydrous Cordierite—A Reply Wilson Allan F. Department of Geolopy and Mineralogy, University of Queensland, St. Lucia (Brisbane), Queensland, Australia, 4067 3 1981 44 333 67 68 22 1 1980 28 7 1980 Copyright © 1981, The Mineralogical Society 1981