1. Environmental Geochemistry Group, LGIT, Maison des Géosciences, Joseph Fourier University, CNRS, BP53, F-38041 Grenoble Cedex 9, France, ANDRA, Parc de la Croix Blanche, 1-7 rue Jean Monnet, F-92298 Châtenay-Malabry Cedex, France, Laboratory Liquides Ioniques & Interfaces Chargées, Paris 06 University, Case Courrier 51, 4 Pl. Jussieu, F-75252 Paris, France, Crystallography Laboratory, ISTO, University of Orléans, CNRS, F-45067 Orléans Cedex 2, France, and Geological Institute, Russian Academy of Sciences...