gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.2.256 Experimental Calibration of Oxygen Isotope Fractionation between Calcite and Tremolite in the Presence of a CO₂-H₂O Fluid and a New Data Processing Method for Three Phase Systems Zheng Y.-F. Metz P. Satir M. Institut für Mineralogie, Petrologie und Geochemie, Universität Tübngen, Wilhelmstraße 56, D-72074 Tübingen, Germany August–September 1994 58A 2 1002 1003 Copyright © 1994, The Mineralogical Society 1994