gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.3.80 Sulphur and Strontium Isotope Composition of Llobregat River (NE of Spain): Natural Versus Anthropogenic Tracers in Stream Waters Soler A. Canals A. Dept. de Cristal.lografia, Mineralogia i Dipòsits Minerals. Universitat de Barcelona, Martí i Franqués s/n, 08028 Barcelona, Spain Goldstein S. L. Lamont-Doherty Earth Observatory, Palisades NY 10964, USA Vitoria L. Dept. de Cristallografia, Mineralogia i Dipòsits Minerals. Universitat de Barcelona, Martí i Franqués s/n, 08028 Barcelona, Spain 1998 62A 3 1425 1426 Copyright © 1998, The Mineralogical Society 1998