gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.3.224 Oxygen Isotope Disequilibrium Between Calcite and Forsterite in the Presence of a Large Amount of Fluid Zheng Y.-F. Department of Earth and Space Sciences, University, of Science and Technology of China, Hefei 230026, PR China Metz P. Satir M. Institut fuer Mineralogie, Petrologie und Geochemie, University of Tuebingen, Wilhelmstr. 56, D-72074 Tuebingen, Germany Sharp Z. D. Institut de Mineralogie et Petrographie, Universite de Lausanne, BFSH-2, CH-1015 Lausanne, Switzerland 1998 62A 3 1700 1701 Copyright © 1998, The Mineralogical Society 1998