April RH. 1980. Regularly Interstratified Chlorite/Vermiculite in Contact Metamorphosed Red Beds, Newark Group, Connecticut Valley. Clays and Clay Minerals 28:1-11.

Graf G, Lagaly G. 1980. Interaction of Clay Minerals with Adenosine-5-Phosphates. Clays and Clay Minerals 28:12-18.

Hawkins RK, Egelstaff PA. 1980. Interfacial Water Structure in Montmorillonite from Neutron Diffraction Experiments. Clays and Clay Minerals 28:19-28.

Gilkes RJ, Suddhiprakarn A, Armitage TM. 1980. Scanning Electron Microscope Morphology of Deeply Weathered Granite. Clays and Clay Minerals 28:29-34.

Hodges SC, Zelazny LW. 1980. Determination of Noncrystalline Soil Components by Weight Difference After Selective Dissolution. Clays and Clay Minerals 28:35-42.

Ross CAM, Longworth G. 1980. Mossbauer Study of the Attenuation of Iron in an Irrigated Greensand Lysimeter. Clays and Clay Minerals 28:43-49.

Miyata S. 1980. Physico-Chemical Properties of Synthetic Hydrotalcites in Relation to Composition. Clays and Clay Minerals 28:50-56.

Henmi T, Parfitt RL. 1980. Laminar Opaline Silica from Some Volcanic Ash Soils in New Zealand. Clays and Clay Minerals 28:57-60.

McAtee JL, Robbins RC. 1980. Gas Chromatographic Separation of Cresols by Various Quaternary Ammonium Substituted Montmorillonites. Clays and Clay Minerals 28:61-64.

Kadi-Hanifi M. 1980. Proton Nuclear Magnetic Resonance Studies of "One Layer" Hydrates of Oriented Hectorite. Clays and Clay Minerals 28:65-66.

Schramm LL. 1980. Application of Ultrafiltration/Dialysis to the Preparation of Clay Suspensions. Clays and Clay Minerals 28:67-69.

Giese, RF Jr. 1980. Hydroxyl Orientations and Interlayer Bonding in Amesite. Clays and Clay Minerals 28:81-86.

Brindley GW, Kikkawa S. 1980. Thermal Behavior of Hydrotalcite and of Anion-Exchanged Forms of Hydrotalcite. Clays and Clay Minerals 28:87-91.

Henmi T. 1980. Effect of SiO2/Al2O3 Ratio on the Thermal Reactions of Allophane. Clays and Clay Minerals 28:92-96.

Keller WD, Cheng H, Johns WD, Meng C. 1980. Kaolin from the Original Kauling (Gaoling) Mine Locality, Kiangsi Province, China. Clays and Clay Minerals 28:97-104.

Endo T, Mortland MM, Pinnavaia TJ. 1980. Intercalation of Silica in Smectite. Clays and Clay Minerals 28:105-110.

Chou JSd, Low PF, Roth CB. 1980. Absorption of Infrared Radiation by D2O and HDO Mixed with Montmorillonite. Clays and Clay Minerals 28:111-118.

Koppelman MH, Emerson AB, Dillard JG. 1980. Adsorbed Cr(III) on Chlorite, Illite, and Kaolinite: an X-Ray Photoelectron Spectroscopic Study. Clays and Clay Minerals 28:119-124.

Abdo S, Cruz MI, Fripat JJ. 1980. Metallation-Demetallation Reaction of Tin Tetra(4-Pyridyl) Porphyrin in Na-Hectorite. Clays and Clay Minerals 28:125-129.

Adams JM, Waltl G. 1980. Thermal Decomposition of a Kaolinite: Dimethyl Sulfoxide Intercalate. Clays and Clay Minerals 28:130-134.

Parker JC, Zelazny LW, Amos DF. 1980. Swelling Components of Compacted Ca-Montmorillonite. Clays and Clay Minerals 28:135-141.

Komarneni S, Roy DM. 1980. Hydrothermal Effects on Cesium Sorption and Fixation by Clay Minerals and Shales. Clays and Clay Minerals 28:142-148.

de Bussetti SG, Ferrreiro EA, Helmy AK. 1980. Adsorption of 1,10-Phenanthroline by Some Clays and Oxides. Clays and Clay Minerals 28:149-154.

Costanzo PM, Clemency CV, R. F. Giese J. 1980. Low Temperature Synthesis of a 10-A Hydrate of Kaolinite Using Dimethylsulfoxide and Ammonium Fluoride. Clays and Clay Minerals 28:155-156.

Richards KS. 1980. Influence of Suspended Kaolinite on the Channel Form of a Polluted Stream in Cornwall. Clays and Clay Minerals 28:157-159.

Eberl DD. 1980. Alkali Cation Selectivity and Fixation by Clay Minerals. Clays and Clay Minerals 28:161-172.

Eggleton RA, Buseck PR. 1980. High Resolution Electron Microscopy of Feldspar Weathering. Clays and Clay Minerals 28:173-178.

Taylor RM, McKenzie RM. 1980. The Influence of Aluminum on Iron Oxides. VI. The Formation of Fe(II)-Al(III) Hydroxy-Chlorides, -Sulfates, and -Carbonates as New Members of the Pyroaurite Group and Their Significance In Soils. Clays and Clay Minerals 28:179-187.

Bagin VI, Gendler TS, Dainyak LG, Kuz'Min RN. 1980. Mossbauer, Thermomagnetic, and X-Ray Study of Cation Ordering and High-Temperature Decomposition in Biotite. Clays and Clay Minerals 28:188-196.

Czarnecka E, Guillott JE. 1980. Formation and Characterization of Clay Complexes with Bitumen from Athabasca Oil Sand. Clays and Clay Minerals 28:197-203.

Keren R, Shainberg I. 1980. Water Vapor Isotherms and Heat of Immersion of Na-and Ca-Montmorillonite Systems. III. Thermodynamics. Clays and Clay Minerals 28:204-210.

Koppelman MH, Dillard JG. 1980. Adsorption of Cr(NH3)6 3+ on Clay Minerals and The Characterization of Chromium by X-Ray Photoelectron Spectroscopy. Clays and Clay Minerals 28:211-216.

Harder H. 1980. Synthesis of Glauconite at Surface Temperatures. Clays and Clay Minerals 28:217-222.

Lim CH, Jackson ML, Koons RD, Helmke PA. 1980. Kaolins: Sources of Differences in Cation-Exchange Capacities and Cesium Retention. Clays and Clay Minerals 28:223-229.

Liebling RS, Scherp HS. 1980. Chlorite and Mica as Indicators of Provenance. Clays and Clay Minerals 28:230-232.

Bart JC, Burriesci N, Cariati F, Micera G, Gessa C. 1980. Spectroscopic Investigations of Iron Distribution in Some Bentonites from Sardinia. Clays and Clay Minerals 28:233-236.

May RW. 1980. Authigenic Kaolinite in Till. Clays and Clay Minerals 28:237-238.

Pevear DR, Dethier DP, Frank D. 1982. Clay Minerals in the 1980 Deposits from Mount St. Helens. Clays and Clay Minerals 30:241-252.

Pevear DR, Williams VE, Mustoe GE. 1980. Kaolinite, Smectite, and K-Rectorite in Bentonites: Relation to Coal Rank at Tulameen, British Columbia. Clays and Clay Minerals 28:241-254.

McBride MB. 1980. Interpretation of the Variability of Selectivity Coefficients for Exchange Between Ions of Unequal charge on Smectites. Clays and Clay Minerals 28:255-261.

Helmy AK, Natale IM, Mandolesi ME. 1980. Negative Adsorption in Clay-Water Systems with Interacting Double Layers. Clays and Clay Minerals 28:262-266.

Taylor RM, Schwertmann U. 1980. The Influence of Aluminum on Iron Oxides. VII. Substitution of Al For Fe In Synthetic Lepidocrocite. Clays and Clay Minerals 28:267-271.

Carlson L, Schwertmann U. 1980. Natural Occurrence of Ferroxyhite (∂ '-FeOOH). Clays and Clay Minerals 28:272-280.

Yamananka S, Yamashita G, Hattori M. 1980. Reaction of Hydroxy-Bismuth Polycations with Montmorillonite. Clays and Clay Minerals 28:281-284.

Parfitt RL, Hemni T. 1980. Structure of Some Allophanes from New Zealand. Clays and Clay Minerals 28:285-294.

Maksimovic Z, Brindley GW. 1980. Hydrothermal Alteration of a Serpentinite Near Takovo, Yugoslavia, to Chromium-Bearing Illite/Smectite, Kaolinite, Tosudite, and Halloysite. Clays and Clay Minerals 28:295-302.

Brewster GR. 1980. Effect of Chemical Pretreatment on X-Ray Powder Diffraction Characteristics of Clay Minerals Derived from Volcanic Ash. Clays and Clay Minerals 28:303-310.

Egozy Y. 1980. Adsorption of Cadmium and Cobalt on Montmorillonite as a Function of Solution Composition. Clays and Clay Minerals 28:311-318.

Wada K, Kakuto Y. 1980. Selective Adsorption of Zinc on Halloysite. Clays and Clay Minerals 28:321-327.

Parfitt RL, Furkert RJ, Henmi T. 1980. Identification and Structure of Two Types of Allophane from Volcanic Ash Soils and Tephra. Clays and Clay Minerals 28:328-334.

Gerstl Z, Banin A. 1980. Fe2+-Fe3+ Transformations in Clay and Resin Ion-Exchange Systems. Clays and Clay Minerals 28:335-345.

Chukhrov FV, Gorshkov AI, Rudnitskaya ES, Beresovskaya VV, Sivtsov AV. 1980. Manganese Minerals in Clays: A Review. Clays and Clay Minerals 28:346-354.

Heller-Kallai L, Rozenson I. 1980. Dehydroxylation of Dioctahedral Phyllosilicates. Clays and Clay Minerals 28:355-368.

Brindley GW. 1980. Intracrystalline Swelling of Montmorillonites in Water-Dimethylsulfoxide Systems. Clays and Clay Minerals 28:369-372.

Tettenhorst R, Hofmann DA. 1980. Crystal Chemistry of Boehmite. Clays and Clay Minerals 28:373-380.

Siffert B, Espinasse P. 1980. Adsorption of Organic Diacids and Sodium Polyacrylate onto Montmorillonites. Clays and Clay Minerals 28:381-387.

Alietti A, Mejsner J. 1980. Structure of a Talc/Saponite Mixed-Layer Mineral. Clays and Clay Minerals 28:388-390.

Rozenson I, Heller-Kallai L. 1980. Order-Disorder Phenomena Accompanying the Dehydroxylation of Dioctahedral Phyllosilicates. Clays and Clay Minerals 28:391-392.

Hurst AR. 1980. Occurrence of Corroded Authigenic Kaolinite in a Diagenetically Modified Sandstone. Clays and Clay Minerals 28:393-396.

Manker JP, Cofer HE. 1980. Smectite-Rich Pisolites of the Andersonville, Georgia, Area. Clays and Clay Minerals 28:397-399.

Srodon J. 1980. Precise Identification of Illite/Smectite Interstratifications by X-Ray Powder Diffraction. Clays and Clay Minerals 28:401-411.

Bolland MDA, Posner AM, Quirk JP. 1980. pH-Independent and pH-Dependent Surface Charges on Kaolinite. Clays and Clay Minerals 28:412-418.

Srodon J. 1980. Synthesis of Mixed-Layer Kaolinite/Smectite. Clays and Clay Minerals 28:419-424.

Violante A, Violante P. 1980. Influence of pH, Concentration, and Chelating Power of Organic Anions on the Synthesis of Aluminum Hydroxides and Oxyhydroxides. Clays and Clay Minerals 28:425-434.

Brindley GW, Kao C. 1980. Formation, Compositions, and Properties of Hydroxy-Al-and Hydroxy-Mg-Montmorillonite. Clays and Clay Minerals 28:435-443.

Adams JM, Riekel C. 1980. One-Dimensional Neutron Diffraction Study of a Vermiculite. Clays and Clay Minerals 28:444-445.