Hydrothermal Crystallization of Ammonium-Saponite at 200 °C and Autogenous Water Pressure

Roland J. M. J. Vogels, Johan Breukelaar, J. Theo Kloprogge, J. Ben H. Jansen and John W. Geus 1

Mechanism of Adsorption and Desorption of Water Vapor by Homoionic Montmorillonite: 3. The Mg²⁺, Ca²⁺, Sr²⁺ and Ba²⁺ Exchanged Forms

J. M. Cases, I. Bérend, M. François, J. P. Uriot, L. J. Michot and F. Thomas 8

Interaction of Rimsulfuron with Smectites

Luca Calamai, Ottorino Pantani, Alba Pusino, Carlo Gessa and Paolo Fusi 23

Weathering of Chlorite to a Low-Charge Expandable Mineral in a Spodosol on the Apennine Mountains, Italy

Stefano Carnicelli, Aldo Mirabella, Guia Cecchini and Guido Sanesi 28

Topological and Thermal Properties of Surfactant-Modified Clinoptilolite Studied by Tapping-Mode™ Atomic Force Microscopy and High-Resolution Thermogravimetric Analysis

E. J. Sullivan, D. B. Hunter and R. S. Bowman 42

Transformation of Smectite to Illite in Bentonite and Associated Sediments from Kaka Point, New Zealand: Contrast in Rate and Mechanism

Gejing Li, Donald R. Peacor and Douglas S. Coombs 54

Raman Microprobe Spectroscopy of Halloysite

R. L. Frost and H. F. Shurvell 68

 Tin-Clay Complexes: A Mössbauer Study

D. Petridis and T. Bakas 73

Intercalation Characteristics of Rhodamine 6G in Fluor-taeniolite: Orientation in the Gallery

Taketoshi Fujita, Nobuo Iyi, Tetsushi Kosugi, Akitsugu Ando, Takahiro Deguchi and Takayuki Sota 77

Surface Charge Properties of Kaolinite

Brian K. Schroth and Garrison Sposito 85

Rehydration of Zn-Al Layered Double Hydroxides

F. Kooli, C. Depège, A. Ennaqadi, A. de Roy and J. P. Besse 92

Smectite Illitization in Pliocene-Age Gulf of Mexico Mudrocks

J. H. Rask, L. T. Bryndzia, N. R. Braunsdorf and T. E. Murray 99

Effect of Mineral Host on Surface Acidity of Hydroxy-Cr Intercalated Clays

Teresa J. Bandosz, Jacek Jagiello and James A. Schwarz 110

Hungarian Investigations on the "Zempleni" Illite

István Viczián 114

Illite and Smectite: Metastable, Stable or Unstable? Further Discussion and a Correction

E. J. Essene and D. R. Peacor 116.