gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.2.272 Geochemical Contribution to Study of Chemical and Mechanical Weathering of a Mediterranean Watershed: The Hérault Basin, S France Petelet E. Luck J.-M. Ben Othman D. Lab. Géotluides-Bassins-Eau UMR5569, case 057, Université Montpellier II, Pl.Bataillon, 34095 Montpellier cedex 5, France Negrel P. Centre Thématique Environnement, 3 av. de C. Guillemin, BRGM, BP 6009, 45060 Orléans cedex 2, France 1998 62A 2 1159 1160 Copyright © 1998, The Mineralogical Society 1998