gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.2.76 The Compositional Dependence of HFSE Partitioning: A Comparison between Pyroxene- and Magnetite-Melt Systematics Nielsen R. L. Forsythe L. M. COAS, Oregon State University, Corvallis, Oregon 97331 Hack P. J. Dept. Geology, University of Oregon, Eugene, Oregon 97403 Gallahan W. E. Fisk M. R. COAS, Oregon State University, Corvallis, Oregon 97331 Johnston A. D. Dept. Geology, University of Oregon, Eugene, Oregon 97403 August–September 1994 58A 2 653 654 Copyright © 1994, The Mineralogical Society 1994