gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1992.056.383.16 Short Communications Comment on ‘Zoned Hibonites from Punalur, South India’ Morgan P. E. D. Rockwell International Science Centre 1049 Camino Dos Rios PO Box 1085 Thousand Oaks, Calif. 91358 U.S.A. 6 1992 56 383 260 260 24 9 1991 Copyright © 1992, The Mineralogical Society 1992 hibonite zoning Punalur, India