gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.1.192 I.C.P. Magnetic Sector Multicollector Mass Spectrometry and Its Applications to Geochemistry Halliday A. N. Lee D.-C. Christensen J. N. Yi W. Hall C. M. Jones C. E. Teagle D. Dept. Geol. Sci. Univ. of Michigan, Ann Arbor, MI 48109 Walder A. J. Fisons Elemental, Winsford, Cheshire, U.K. Freedman P. A. Fisons Instruments, VG Isotech, Middlewich, Cheshire, U.K 8 1994 58A 1 366 367 Copyright © 1994, The Mineralogical Society 1994