Abstract
This paper aims at characterizing the morphology, texture, and microstructure of three hydrated kaolin rich clays (f > 0.2 μm) from volcanic soils. These clays represent a weathering sequence in which CEC, halloysite content with respect to kaolinite, as well as smectite content in the halloysite-smectite mixed-layer clays decrease with increased weathering. The clay samples were made homoionic (K+ or Mg2+) and hydrated under a low suction pressure (3.2 kPa). After replacing water by a resin, ultrathin sections were cut and examined by TEM. Particle shape varies with increased weathering, as follows: spheroids → tubes → platelets. Higher aggregation and dispersion are observed by TEM after Mg2+ and K+ saturation, respectively, at two levels of the clay-water system organization: intraparticle and interparticle. The microstructure variations induced by the nature of the exchangeable cation become less pronounced with decreasing layer charge of the 2:1 layers. They are thus related here to the presence of smectite layers localized in the halloysite habitus, mostly at the particle periphery. These results show that small amounts of smectite largely affect the organization of clays rich in kaolins at a high water content, and that K+ behaves here as a dispersing ion.
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Anton, O. and Rouxhet, P. G. (1977) Note on the intercalation of kaolinite, dickite and halloysite by dimenthyl-sulfoxide: Clays & Clay Minerals 25, 259–263.
Bailey, S. W. (1990) Halloysite—A critical assessment: in Proc. 9th Int. Clay Conf. Strasbourg, 1989, V. C. Farmer and Y. Tardy, eds., Sci. Géol. Mém. 86, 89–98.
Bartoli, F., Burtin, G., and Herbillon, A. J. (1991) Disaggregation and clay dispersion of oxisols: Na resin, a recommended methodology: Geoderma 49, 307–377.
Ben Rhaïem, H., Pons, C. H., and Tessier, D. (1987) Factors affecting the microstructure of smectites: Role of cation and history of applied stress: Proc. 8th Int. Clay Conf. Denver, 1985, L. G. Schultz, H. van Olphen, and F. A. Mumpton, eds., The Clay Minerals Society, Bloomington, Indiana, 292–297.
Blakemore, L. C. (1981) Acid oxalate extractable iron, aluminum, and silicon: Circular letter n°5, appendix 1, ICOM-AND, New Zealand Soil Bureau, Lower Hutt, New Zealand.
Churchman, G. I., Whitton, J. S., Claridge, G. C. C., and Theng, B. K. G. (1984) Intercalation method for differentiating halloysite from kaolinite: Clays & Clay Minerals 32, 241–248.
Delvaux, B., Herbillon, A. J., and Vielvoye, L. (1989) Characterization of a weathering sequence of soils derived from volcanic ash in Cameroon. Taxonomic, mineralogical and agronomic implications: Geoderma 45, 375–388.
Delvaux, B., Herbillon, A. J., Dufey, J. E., and Vielvoye, L. (1990a) Surface properties and clay mineralogy of hydrated halloysitic soil clays. I: Existence of interlayer K+ specific sites: Clay Miner. 24, 617–630.
Delvaux, B., Herbillon, A. J., Vielvoye, L., and Mestdagh, M. M. (1990b) Surface properties and clay mineralogy of hydrated halloysitic soil clays. II: Evidence for the presence of halloysite/smectite (H/Sm) mixed-layer clays: Clay Miner. 25, 141–160.
Delvaux, B., Herbillon, A. J., Dufey, J. E., Burtin, G., and Vielvoye, L. (1988) Adsorption sélective du potassium par certaines halloysites ( 10 Å) de sols tropicaux développés sur roches volcaniques. Signification minéralogique: C.R. Acad. Sci. Paris, T. 307, série II, 311–317.
Dixon, J. B. (1989) Kaolin and serpentine group minerals: in Minerals in Soil Environments, J. B. Dixon and S. B. Weed, eds., Soil Science Society of America Book Series n°l, 467–526.
Farmer, V. C. (1964) The Infrared Spectra of Minerals: Mineralogical Society, London.
Kirkman, J. H. (1977) Possible structure of halloy site disks and cylinders observed in some New Zealand rhyolitic teph-ras: Clay Miner. 12, 199–216.
Kirkman, J. H. (1981) Morphology and structure of halloy-site in New Zealand tephras: Clays & Clay Minerals 29, 1–9.
Kohyama, N., Fukushima, K., and Fukami, A. (1978) Observation of the hydrated form of tubular halloysite by an electron microscope equipped with an environmental cell: Clays & Clay Minerals 26, 25–40.
Kohyama, N., Fukushima, K., and Fukami, A. (1982) Interlayer hydrates and complexes of clay minerals observed by electron microscopy using an environmental cell: in Proc. 7th Int. Clay Conf. Bologna and Pavia, 1981, H. van Olphen and F. Veniale, eds., Elsevier, Amsterdam, 373–384.
Mackenzie, R. C. (1952) A micromethod for determination of cation exchange capacity of clays: Clay Miner. Bull. 1, 203–205.
Mehra, O. P. and Jackson, M. L. (1960) Iron oxides removal from soils and clays by dithionite-citrate system buffered with sodium bicarbonate: Clays & Clay Minerals 5, 317— 327.
Nagasawa, K. and Miyazaki, S. (1976) Mineralogical properties of halloysite as related to its genesis: in Proc. 6th Int. Conf. Mexico City, 1975, S. W. Bailey, ed., Wilmette, Illinois, 256–265.
Parham, W. E. (1969) Formation of halloysite from feldspar: Low temperature, artificial weathering versus natural weathering: Clays & Clay Minerals 17, 13–22.
Parker, T. W. (1969) A classification of kaolinites by infrared spectroscopy: Clay Miner. 8, 135–141.
Quantin, P. (1990) Specficity of the halloysite-rich tropical or subtropical soils: Transactions 14th International Congress of Soil Science, Kyoto, 1990, vol. VII, International Society of Soil Science, 16–21.
Quantin, P. (1991) Les sols de l’archipel volcanique des Nouvelles-Hébrides (Vanuatu). Etude de la pédogenèse initiale en milieu tropical: Thèse, U.E.R. des Sciences de la Vie et de la Terre, Institut de Géologie, Strasbourg.
Quantin, P., Gautheyrou, J., and Lorenzoni, P. (1988) Halloysite formation through in situ weathering of volcanic glass from trachytic pumices, Vico’s Volcano, Italy: Clay Miner. 23, 423–437.
Rouiller, J., Burtin, G., and Souchier, B. (1972) La dispersion des sols dans l’analyse granulométrique. Méthode utilisant les résines échangeuses d’ions: Bulletin ENSAIA Nancy XIV, 193–205.
Saigusa, M., Shoji, S., and Kato, T. (1978) Origin and nature of halloysite in Ando soils from Towada tephra, Japan: Geoderma 20, 115–129.
Tazaki, K. (1982) Analytical electron microscopic studies of halloysite formation processes. Morphology and composition of halloysite: in Proc. 7th Int. Clay Conf, Bologna and Pavia, 1981, H. van Olphen and F. Veniale, eds., Developments in Sedimentology 27, 573–584.
Tessier, D. (1984) Etude expérimentale de l’organisation des matériaux argileux: Hydratation, gonflement et structuration au cours de la dessication et de la réhumectation: Thèse Univ. Paris VII, INRA Versailles.
Tessier, D. (1987) Identification of clays. Data from investigations with strongly hydrated systems: in Methodology in Soil-K Research, Proc. 20th Colloquium Int. Potash Institute, International Potash Institute, Bern, Switzerland, 45–63.
Tessier, D. (1990) Behaviour and microstructure of clay minerals: in Soil Colloids and Their Associations in Aggregates, Ghent, 1984, M. F. De Boodt, M. H. B. Hayes, and A. J. Herbillon, eds., NATO ASI, Series B: Physics 215, 387–415.
Tessier, D. and Berner, J. (1979) Utilisation de la microscopie électronique à balayage dans l’étude des sols. Observation de sols humides soumis à différents pF: Science du Sol 1, 67–82.
Tessier, D. and Pedro, G. (1987) Mineralogical characterization of 2:1 clays in soils: Importance of the clay texture: in Proc. 8th Int. Clay Conf, Denver, 1985, L. G. Schultz, H. van Olphen, and F. A. Mumpton, eds., The Clay Minerals Society, Bloomington, Indiana, 78–84.
Touret, O., Pons, C. H., Tessier, D., and Tardy, Y. (1990) Etude de la répartition de l’eau dans des argiles saturées Mg2+ aux fortes teneurs en eau: Clay Miner. 25, 217–233.
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Delvaux, B., Tessier, D., Herbillon, A.J. et al. Morphology, Texture, and Microstructure of Halloysitic Soil Clays as Related to Weathering and Exchangeable Cation. Clays Clay Miner. 40, 446–456 (1992). https://doi.org/10.1346/CCMN.1992.0400409
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DOI: https://doi.org/10.1346/CCMN.1992.0400409