gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.1.194 (²³⁴U/²³⁸U) Disequilibria and Sr Isotopic Variations in a Laterite: Dating or Tracing U Mobility? Dequincey O. Chabaux F. Clauer N. Liewig N. EOST, Centre de Géochimie de la Surface 1, rue Blessig 67 084 Strasbourg Cedex France Muller J. P. UR 12 Géosciences de l'Environnement Tropical, ORSTOM, 32, av. H. Varagnat, 93143 Bondy Cedex, France 1998 62A 1 368 369 Copyright © 1998, The Mineralogical Society 1998