New Developments in the Geology of Natural Zeolites 3
R. L. Hay

Australian Occurrences of Ca-Type Clinoptilolite 15
P. G. Flood

Zeolite Occurrences in Soil Environments: An Updated Review 23
J. L. Boettinger and R. C. Graham

Late-Stage Laumontite Cementation and Dissolution in the Los Angeles Basin, 39
Southern California
R. L. Coffman

Hypothesis on the Genesis of Zeolites in Some European Volaniclastic Deposits 51
M. de'Gennaro, M. Adabbo, and A. Langella

Calcium Zeolites in Rhyolitic Drill Cores from Yellowstone National Park 69
K E. Bargar and T. E. C. Keith

Conditions of Stilbite and Chabazite Formation in Hot Springs of the Idaho, 87
Batholith, Central Idaho
R. H. Mariner and T. S. Presser

Zeolites in Petroleum and Natural Gas Reservoirs in Japan: A Review 99
Azuma Iijima

Temperature-Time Relationships of Zeolitic Reactions during Burial Diagenesis 115
in Marine Sequences
Azuma Iijima and Shigenori Ogihara

Application of Oxygen and Hydrogen Isotopes to Zeolites 125
Haraldur R. Karlsson

K/Ar Dating of Clinoptilolite, Mordenite, and Co-existing Illite/Smectite from 141
Yucca Mountain, Nevada
Giday WoldeGabriel

Crystal Structure and Chemistry of Newly Discovered Zeolites and Dehydration 159
of Known Zeolites: A Review
Alberto Alberti

New Data on the Structure and Composition of the Silicoaluminophosphate viséite 173
and its Discreditation as a Zeolite
Fransesco Di Renzo and Zelimir Gabelica

The Influence of Intergrowths on Zeolite Properties 187
D. E. W. Vaughan, K G. Strohmaier, M. M. J. Treacy, S. B. Rice,
and M. E. Leonowicz

Synchrotron X-ray Diffraction Techniques: Applications to Zeolites 199
Gilberto Artioli

Binding Energies and Structural Properties of the Heulandite-Clinoptilolite Series 209
Maynard Slaughter and Jae-Young Yu

Localization and Disordering of Water Molecules in Heulandite: Comparison of 227
Proton Magnetic Resonance and Neutron Diffraction Data
S. P. Gabuda, S. G. Kozlova, N. K. Moroz, L. Filizova, and Dimiter Kirov

Zonality in NH₄-Analcime, K-Natrolite, and Li-Sodalite 235
Sergei V. Goryainov, IgorA. Belitsky, and Vladimir N. Korolyuk

Determination of Clinoptilolite and Heulandite in Tuffaceous Deposits by Infrared 245
Spectroscopy
Sergei V. Goryainov, Valenetina N. Stolpovskaya, Anna Yu. Likhacheva,
Igor A. Belitsky, and Boris A. Fursenko

Thermal Behavior of Natural Zeolites 259
D. L. Bish

Cation Exchange in Clinoptilolite: An X-ray Powder Diffraction Analysis 271
Ognyan Petrov

Calorimetric Study of Na-K Ion-Exchange in Clinoptilolite 281
N. Petrova, L. Filizova, and G. N. Kirov

Evaluation of Clinoptilolite Tuffs as Ion Exchangers 289
V. A. Nikashina, N. K Galkina, I. V. Komarova, B. G. Anfilov,
and M. A. Argin

Physicochemical Properties of Natural Zeolites used for Adsorption of Water 299
R. Roque-Malherbe, L. Lemes-Fernandez, L. Lopez-Colado, C. de las Pozas,
and A. Montes-Carballal

Adsorption of Organic Molecules from Aqueous Solution on Surface-Modified 309
Natural Zeolites
Fernando Cadena and Enrique Cazares

Decreased Permeability of Clinoptilolite-rich Tuffs Resulting from Cation 325
Exchange and Associated Precipitation Reactions
J. A. Boylan, Jr.

Wastewater Purification in Hungary Using Natural Zeolites 341
Dénes Kalló

Pollution-Abatement Technologies by Natural Zeolites: The Rim-Nut Process 351
Lorenzo Liberti, Antonio Lopez, Vincenzo Amicarelli,
and Giancarlo Boghetich

Use of Italian Chabazite and Phillipsite for the Removal of Heavy Metals from 363
Wastewaters: A Review
Carmine Colella

Cadmium Removal from Wastewaters Using Chabazite and Phillipsite 377
Carmine Colella, M de'Gennaro, A. Langella, and M. Pansini

Surface Properties of MnO₂-Adsorbent Prepared from Clinoptilolite-rich Tuff 385
from Tokaj, Hungary
Klara Polyak, Jozsef Hlavay, and Julia Maixner

Ability of Clinoptilolite-rich Tuffs to Remove Metal Cations Commonly Found 397
in Acidic Drainage
P. R. Bremner and L. E. Schultze

Treatment of Acid Mine Drainage Using Natural Zeolites 405
M. J. Zamzow and L. E. Schultze

Application of Manganese-Modified Clinoptilolite in the Treatment of Paint-Shop 415
Effluents
Janos Papp, Klaus Heinzel, and Susanne Adams

Thermal Stability of Cu-Clinoptilolite and its Complexing Action for Sulfide Ions 421
Cheng Han

Selective Catalytic Reduction of NO with NH₃ on Copper-Exchanged Natural 429
Mordenite
Maria Turco, Giovanni Bagnasco, Luciana Lisi, Gennaro Russo, Diana
Sannino, and Paolo Ciambelli

Cd-Clinoptilolite as a Catalyst for the Hydration of Acetylene to Acetaldehyde 437
György Onyestyák and Dénes Kalló

Zeolites in Animal Nutrition and Health: A Review 449
W. G. Pond

Application of Clinoptilolite during Organophosphate Intoxication in Sheep 459
G. Kováč, P. Bartko, L. Vrzgula, P. Reichel, F. Ništiar, J. Mojžiš,
and H. Seidel

Use of Clinoptilolite from Slovakia in Animal Production: A Review 467
P. Bartko, H. Seidel, and G. Kováč,

Recent Progress in the Use of Natural Zeolites in Agronomy and Horticulture 477
E. R. Allen and D. W. Ming

Influence of NH₄-Exchanged Clinoptilolite on Nutrient Concentrations in Sorgham- 491
Sudangrass
D. D. Eberl, K A. Barbarick, and T. M. Lai

Zeoponic Plant-Growth Substrates for Space Applications 505
D. W. Ming, D. J. Barta, D. C. Golden, C. Galindo, Jr., and D. L. Henninger

Natural Zeolites as an Agricultural Resource in the Hot, Wet Tropics: South China 515
as a Model
W. E. Parham

Use of Natural Zeolites at Chernobyl 525
Nikolai F: Chelishchev

The Importance of Zeolites in the Potential High-Level Radioactive Waste 533
Repository at Yucca Mountain, Nevada
David T. Vaniman and David L. Bish

Distribution and Chemistry of Fracture-Lining Zeolites in Yucca Mountain, Nevada 547
B. A. Carlos, S. J. Chipera, D. L. Bish, and Robert Raymond

Equilibrium Modeling of the Formation of Zeolites in Fractures at Yucca Mountain, 565
Nevada
S. J. Chipera, D. L. Bish, and B. A. Carlos

Treatment of Contaminated Wastewaters at Oak Ridge National Laboratory by 579
Zeolites and Other Ion Exchangers
S. M. Robinson, T. E. Kent, and W. D. Arnold

Zeolitic Tuffs as Building Materials in Italy: A Review 589
Rosario Aiello

Zeolitic Tuff as a Pozzolanic Addition in Manufacturing Blended Cements 603
Riccardo Sersale

Zeolites in Solar Energy and Refrigeration Applications: A Review of Zeopower 613
Company Work for the Past 20 Years
Dimiter Tchernev