Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-26T07:51:03.442Z Has data issue: false hasContentIssue false
  • English
  • Français

The chemical composition and structure of a 14 Å intergradient mineral in a Korean Ultisol

Published online by Cambridge University Press:  09 July 2018

K. Wada ,
Y. Kakuto ,
M. A. Wilson  and
J. V. Hanna
K. Wada
Affiliation:
Faculty of Agriculture, Kyushu University 46, Fukuoka 812, Japan
Y. Kakuto
Affiliation:
Faculty of Agriculture, Kyushu University 46, Fukuoka 812, Japan
M. A. Wilson
Affiliation:
Division of Coal and Energy Technology, CSIRO, Delhi Road, North Ryde, New South Wales 2113, Australia
J. V. Hanna
Affiliation:
Department of Chemistry, University of New South Wales, Kensington, NSW 2033, Australia
Get access Rights & Permissions [Opens in a new window]

Abstract

An intergradient 14 Å mineral showing X-ray diffraction features of “chloritized” vermiculite in a Korean Ultisol was studied. The structural formula of the whole 2:1 layer-silicate (14 Å mineral and mica) in the Na+-saturated 0·2–0·5 µm fraction was obtained by elemental, thermogravimetric and 29Si and 27Al nuclear magnetic resonance spectroscopic analyses in combination with extraction of the interlayer material from the 14 Å mineral by hot 1/3 m sodium citrate treatment. This formula showed: (1) the 2 : 1 layer contains nearly one Al3+ in four tetrahedral positions, and Al3+ is the dominant cation in the octahedral sheet; (2) K+, exchangeable Na+ and sodium citrate extractable 1 : 1 layer occupy the interlayer space of the 14 Å mineral in similar proportions. Very little interlayer K was replaced by Na+ during the citrate treatment. Possible schemes of alteration of the 2 : 1 layer to the 1 : 1 layer as its interlayer material are discussed.

Type
Research Article
Information
Clay Minerals , Volume 26 , Issue 4 , December 1991 , pp. 449 - 461
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1991

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barnes, J.R., Clague, A.D., Clayden, N.J., Dobson, C.M. & Jones, R.B. (1986) The application of 29Si and 27Al solid state n.m.r. spectroscopy to characterising minerals in coals. Fuel, 65, 437–441.CrossRefGoogle Scholar
Barnhisel, R.I. & Bertsch, P.M. (1989) Chlorites and hydroxy-interlayered vermiculite and smectite. Pp. 729–788 in: Minerals in Soil Environments (S .B.Dixon & S.B. Weed, editors). Soil Sci. Soc. Am., Madison, Wisconsin.Google Scholar
Barshad, I. & Kishk, F.M. (1969) Chemical composition of soil vermiculite clays as related to their genesis. Contrib. Mineral. Petrol., 24, 136–155.Google Scholar
Bernas, B. (1968) A new method for decomposition and comprehensive analysis of silicates by atomic absorption spectrometry. Anal. Chem., 40, 1682–1686.Google Scholar
Hemminga, M.A. & de Jager, P.A. (1983) Suppression of spinning sidebands in magic angle spinning. J. Magn. Reson., 51, 339–344.Google Scholar
Karathanasis, A.D. Sl Hajek, B.F. (1983) Transformation of smectite to kaolinite in naturally acid soil systems: Structural and thermodynamic considerations. Soil Sci. Soc. Am. J., 47, 158–163.Google Scholar
Kinsey, R.A., Kirkpatrick, R.J., Hower, J., Smith, K.A. & Oldfield, E. (1985) High resolution aluminum-27 and silicon-29 nuclear magnetic resonance spectroscopic study of layer silicates, including day minerals. Am. Miner., 70, 537–548.Google Scholar
Kirkland, D.L. & Hajek, B.F. (1972) Formula derivation of A-interlayered vermiculite in selected soil clays. Soil Sci., 114, 317–322.Google Scholar
Matsue, N. & Wada, K. (1988) Interlayer materials of partially interlayered vermiculites in Dystrochrepts derived from Tertiary sediments. J. Soil Sci., 39, 155–162.CrossRefGoogle Scholar
Mehra, O.P. & Jackson, M.L. (1960) Iron oxide removal from soils and clays by a dithionite-citrate system buffered with sodium bicarbonate. Clays Clay Miner., 8, 317–327.Google Scholar
Rich, C.I. (1968) Hydroxy interlayers in expansible layer silicates. Clays Clay Miner., 16, 15–30.Google Scholar
Schwertmann, U. & Taylor, R.M. (1989) Iron oxides. Pp. 379–438 in: Minerals in Soil Environments (Dixon, J.B. & Weed, S.B., editors). Soil Sci. Soc. Am., Madison, Wisconsin.Google Scholar
Tamura, T. (1958) Identification of clay minerals from acid soils. J. Soil Sci., 9, 141–147.Google Scholar
Wada, K. & Kakuto, Y. (1983a) Intergradient vermiculite-kaolin minerals in a Korean Ultisol. Clays Clay Miner., 31, 183–190.Google Scholar
Wada, K. & Kakuto, Y. (1983b) A new intergradient vermiculite-kaolin mineral in 2:1 to 1:1 mineral transformation. Pp. 123–131 in: Petrologie des Alterations et des Sols(Science Geologiques Memoire 73, Nahon, D. & Noack, Y., editors). Univ. Louis Pasteur de Strasbourg, Strasbourg.Google Scholar
Wada, K. & Kakuto, Y. (1989) "Chloritized" vermiculite in a Korean Ultisol studied by ultramicrotomy and transmission electron microscopy. Clays Clay Miner., 37, 263–268.Google Scholar
Wilson, M.A. (1987) NMR Techniques and Applications in Geochemistry and Soil Chemistry. Pergamon Press, Oxford.Google Scholar