An Improved Contaminant Resistant Clay for Environmental Clay Liner Applications

Laura S. Kajita 609

Frio Shale Mineralogy and the Stoichiometry of the Smectite-to- Illite Reaction: The Most Important Reaction in Clastic Sedimentary Diagenesis

F. Leo Lynch 618

The Genesis of a Mordenite Deposit by Hydrothermal Alteration of Pyroclastics on Polyegos Island, Greece

Konstantinos P. Kitsopoulos 632

Infrared Reflectance Study of Thermally Treated Li- and Cs-Montmorillonites

M. A. Karakassides, D. Petridis and D. Gournis 649

Surface Heterogeneity of Trimethylphenylammonium-Smectite as Revealed by Adsorption of Aromatic Hydrocarbons from Water

Guangyao Sheng, Shihe Xu and Stephen A. Boyd 659

Application of Inverse Gas Chromatography to the Study of the Surface Properties of Slates

M. A. Rodriguez, J. Rubio, F. Rubio, M. J. Liso and J. L. Oteo 670

Relationship Between Cation Exchange Selectivity and Crystalline Swelling in Expanding 2:1 Phyllosilicates

David A. Laird and Chao Shang 681

Comparison of Hematite Coagulation by Charge Screening and Phosphate Adsorption: Differences in Aggregate Structure

Jon Chorover, Jingwu Zhang, Mary Kay Amistadi and Jacques Buffle 690

An Aluminum Pillared Montmorillonite with Fast Uptake of Strontium and Cesium from Aqueous Solutions

D. T. Karamanis, X. A. Aslanoglou, P. A. Assimakopoulos, N. H. Gangas, A. A. Pakou and N. G. Papayannakos 709

Nuclear Magnetic Resonance and X-ray Photoelectron Spectroscopic Investigation of Lithium Migration in Montmorillonite

B. K. G. Theng, S. Hayashi, M. Soma and H. Seyama 718

NMR Study of Dynamics and Evolution of Guest Molecules in Kaolinite/Dimethyl Sulfoxide Intercalation Compound

Shigenobu Hayashi 724

Effect of Interaction between Clay Particles and Fe³⁺ Ions on Colloidal Properties of Kaolinite Suspensions

Kunsong Ma and Alain C. Pierre 733

The Effect of Added Polymers on n-Butylammonium Vermiculite Swelling

M. V. Smalley, H. Jinnai, T. Hashimoto and S. Koizumi 745

Characterization of the Solids Obtained by Pillaring of Griffithite (High Iron Content Saponite) with Al-Oligomers

Miguel Angel Vicente, Mercedes Suarez, Miguel Angel Bañares–Muñoz and Jose Martin–Pozas 761

Goethite Morphologies Investigated via X-ray Diffraction of Oriented

Samples

Robert G. Ford, Paul M. Bertsch and John C. Seaman 769