gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.1.88 Boron Isotope Variations in OIB and BABB Chaussidon M. CRPG-CNRS, BP 20, 54501 Vandoeuvre-lès-Nancy Cedex, France Marty B. ENSG, 93 Avenue de Lattre de Tassigny, 54001 Nancy Cedex, France 8 1994 58A 1 163 164 Copyright © 1994, The Mineralogical Society 1994