gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.2.187 On the Origin of Xe-Isotope Anomalies: A New Approach Based on the ¹³¹Xe/¹³⁴Xe vs ¹³²Xe/¹²⁹Xe Diagrams Mineev S. D. Polyakov V. B. Pleshakov A. M. Laboratory of Isotope Geochemistry, Vernadsky Institute of RAS, Moscow, 117975, Russia Poukhov V. V. Department of Geology, Moscow State University, Moscow, 117234, V-234, Russia Jessberger E. K. Institut für Planetologie, Westfälische-Wilhelms-Universität, Wihelm-Klemm-Str. 10, 48149, Münster, Germany 1998 62A 2 993 994 Copyright © 1998, The Mineralogical Society 1998