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CONTENTS VOL. 1. 1986

Editorial . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 The science/industry interface in clay mineralogy: Aluminum hydroxide -- a case

history J.L. White and S.L. Hem (West Lafayette, Ind., U.S.A.) . . . . . . . . . . . . . . . . . . . . 3

Agriculture Soils developed on basic volcanic material in France and Quebec.-- some problems

for their agronomic use J. Dejou (Clermont-Ferrand, France) and C.R. de Kimpe (Sainte-Foy, Que., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Changes in potassium exchangeability in heated lepidomelane L.M. Kozak and A.D. Scott (Saskatoon, Sask., Canada) . . . . . . . . . . . . . . . . . . . 29

The influence of texture on clay weathering and soil formation in mid-northern Ontario R. Protz, G.J. Ross and M.J. Shipitalo (Guelph, Ont., Canada) . . . . . . . . . . . . . . . 43

Differential alteration of phyllosilicate minerals under hydromorphic conditions M. Caillier (Quebec, P.Q., Canada), B. Guillet and M. Gury (Vandoeuvre-les-Nancy, France) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

The effect of allophane on soil properties R.F. Allbrook (Hamilton, New Zealand) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

The catalytic power of inorganic components in the abiotic synthesis of hydro- quinone-derived humic polymers H. Shindo (Yamaguchi, Japan) and P.M. Huang (Saskatoon, Sask., Canada) . . . . . . 71

Genesis and properties of non-allophanic andisols in Japan S. Shoji (Sendai, Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Kinetics of potassium exchange in heterogeneous systems D.L. Sparks and T.H. Carski (Newark, Del., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . 89

The formation and persistence of various aluminum oxy-hydroxy-sulfate solid phases under different experimental conditions S.S. Singh (Ottawa, Ont., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Environment The effect of bentonite on the interaction of I- with PbO

D.W. Oscarson, R. Taylor, H.G. Miller and S.C.H. Cheung (Pinawa, Man., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Influence of selected cation and anion species on the adsorption of mercury (II) by montmoril lonite J.S. Wang, P.M. Huang, U.T. Hammer and W.K. Liaw (Saskatoon, Sask., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Removal of phosphorus by poorly ordered clays as influenced by heating and grinding T. Henmi (Matsuyama, Japan) and P.M. Huang (Saskatoon, Sask., Canada) . . . . . . 133

Role of clays in the disposal of nuclear waste: a review S.Y. Lee (Oak Ridge, Tenn., U.S.A.) and R.W. Tank (Appleton, Wisc., U .S .A . ) . . . 145

Geotechnical Smectitic clays and post-reclamation differential subsidence of strip mined areas

M.B. Dusseault (Waterloo, Ont., Canada), J.D. Scott and S. Moran (Edmonton, Alta., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

The role of composition and fabric of soils in selected geotechnical engineering case histories J.I. Clark and J.E. Gillott (Calgary, Alta., Canada) . . . . . . . . . . . . . . . . . . . . . . 173

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The mineralogy of sensitive clays in relation to some engineering geology problems -- an overview J. Locat, M.-A. Berube, J.-Y. Chagnon and P. Gelinas (Sainte-Foy, P.Q., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Behaviour of the clay/bitumen/water sludge system from oil sands extraction plants J.D. Scott {Edmonton, Alta., Canada), M.B. Dusseault (Waterloo, Ont., Canada) and W.D. Carrier III (Lakeland, Fla., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . 207

Petroleum Industry Clays and the petroleum industry, an overview -- extended abstract

P.R. Brown (Calgary, Alta., Canada) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219 The behaviour of minerals in Cold Lake oil sands under dry combustion conditions

V.M. Malhotra and H.A. Buckmaster (Calgary, Alta., Canada) . . . . . . . . . . . . . . 225 Authigenic trioctahedral clay minerals coating Clearwater Formation sand grains

in Cold Lake, Alberta -- extended abstract R.S. Dean and C. Nahnybida (Calgary, Alta., Canada) . . . . . . . . . . . . . . . . . . . . 237

Clay materials from the Central Valley of Costa Rica and their possible ceramic uses M. Bertolani and A.G. Loschi Ghittoni (Modena, Italy) . . . . . . . . . . . . . . . . . . . 239

Factors affecting the physical and chemical properties of Argentine kaolins J.L. Galazzo, R.L. Cerro and P.J. Depetrls (Santa Fd, Argentina) . . . . . . . . . . . . 255

Weathering of the Villamayor arkosic sandstone used in buildings under a continental semi-arid climate M.A. Vicente and A. Brufau (Salamanca, Spain) . . . . . . . . . . . . . . . . . . . . . . . 265

The effect of the exchangeable cations on the physico-chemical properties of Wyoming bentonites G.R. Alther {Detroit, Mich., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273

Effects of polymers and clay concentrations on the viscosities of organo-smectite dispersions under high pressure J.L. Das Kanungo and J.L. McAtee, Jr. (Waco, Texas, U.S.A.) . . . . . . . . . . . . . . 285

Characterization and technical properties of a Mg-rich bentonite E. Galen (Sevilla, Spain), A. Alvarez and M.A. Esteban {Madrid, Spain) . . . . . . . . 295

Book Review Atlas of the Microstructure of Clay Soils, by B. Grabowska-Olszewska, V. Osipov

and V. S o k o l o v - P. Smart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

Asphaltene adsorption on clay K.R. Dean and J.L. McAtee (Waco, Texas, U.S.A.) . . . . . . . . . . . . . . . . . . . . . . 313

Mineralogical and industrial characterization of the Bath El-Ghoul clay deposits, southern Jordan H.N, Khoury and W. EI-Sakka {Amman, Jordan) . . . . . . . . . . . . . . . . . . . . . . . 321

Settlement of clay-enveloped radioactive canisters R. Pusch (Lund, Sweden) and R.A. Adey {Southampton, Great Britain) . . . . . . . 353

Viscosity improvement of an Argentine kaolin by ionic treatment J.L. Galazzo, P.J. Depetris, R.L. Cerro {Santa F~, Argentina) and H.H. Murray {Bloomington, Ind., U.S.A.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367

Interactions of Carbaryl with homoionic montmorillonite P. Fusi, G.G. Ristori and M. Franci (Firenze, Italy) . . . . . . . . . . . . . . . . . . . . . 375

Nuclear waste repositories in clays: the Orciatico metamorphic aureole analogy L. Leoni (Pisa, Italy), C. Polizzano {Rome, Italy) and F. Sartori (Pisa, Italy) . . . . . 385

In Memoriam Dr. H.W. van der Marel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409