CLAY MINERALS

VOLUME 33, NUMBER 2, JUNE 1998

CONTENTS

A. Meunier, B. Velde and L. Griffault. The reactivity of bentonites: a review. An application to clay barrier stability for nuclear waste storage 187 D. Janeba, P. ~apkov~i and H. Schenk. Molecular simulations of Zn- 197 G. S. R. Krishnamurti, A. Violante and P. M. Huang. Influence of montmorillonite on Fe(II) oxidation products 205 M. A. Vicente, M. Suarez, M. A. Bafiares-Mufioz and J. M. M. Pozas. Reduction of Fe(III) in a high-iron . Pillaring of the reduced samples with Al13 oligomers 213 B. K. G. Theng, R. H. Newman and J. S. Whitton. Characterization of an alkylammonium-montmorillonite-phenanthrene intercalation complex by carbon-13 nuclear magnetic resonance spectroscopy 221 F. Martin, S. Petit, A. Decarreau, Ph. Ildefonse, O. Grauby, D. Beziat, Ph. de Parseval and Y. Noack. Ga/A1 substitutions in synthetic and smectites 231 J. Ko, G. H. Lee, H.-S. Moon and Y. Song. Alkylammonium characterization of smectite alteration in the Tertiary basins of southeast Korea 243 D. Tessier, M. Dardaine, A. Beaumont and A. M. Jaunet. Swelling pressure and microstructure of an activated swelling clay with temperature 255 P. Dion, J.-F. Alcover, F. Bergaya, A. Ortega, P. L. Llewellyn and F. Rouqudrol. Kinetic study by controlled-transformation rate thermal analysis of the dehydroxyl- ation of 269 P. G. Weidler and H. Stanjek. The effect of dry heating of synthetic 2-line and 6-line ferrihydrite: II. surface area, porosity and fractal dimension 277 Y. Song and H.-S. Moon. Additional data on reevesite and its Co-analogue, as a new member of the hydrotalcite group 285 D. Beaufort, A. Cassagnabere, S. Petit, B. Lanson, G. Berger, J. C. Lacharpagne and H. Johansen. Kaolinite-to- reaction in sandstone reservoirs 297 D. Bartier, M. Buatier, M. Lopez, J. L. Potdevin, H. Chamley and J. Arostegui. Lithological control on the occurrence of chlorite in the diagenetic Wealden complex of the Bilbao anticlinorium (Basco-Cantabrian Basin, Northern Spain) 317 J. Colson, I. Cojan and M. Thiry. A hydrogeological model for formation in the Danian continental facies of the Provence Basin (France) 333 A. Singer, K. Stahr and M. Zarei. Characteristics and origin of (Meerschaum) from Central Somalia 349

Note T. Matsuda. Synthesis of a regularly interstratified 2:1 margarite and beidellite (34 A phase) 363

Announcement 369

ISSN 0009-8558 Typeset by Wes~field Typesetting, North Walsham, Norfolk Printed by Black Bear Press Limited, Cambridge, England