gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1998.62A.2.246 Colloidal Control at the Soil/Water Interface Olivié-Lauquet G. Gruau G. Riou C. Dia A. N. Géosciences Rennes, CNRS UPR 4661, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France Jaffrezic A. INRA, Sciences du Sol, 35042 Rennes Cedex, France 1998 62A 2 1108 1109 Copyright © 1998, The Mineralogical Society 1998