Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-05T14:57:45.518Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural studies of montmorillonites by 57Fe Mössbauer spectroscopy

Published online by Cambridge University Press:  09 July 2018

C. M. Cardile
C. M. Cardile*
Affiliation:
Chemistry Division, Department of Scientific and Industrial Research, Private Bag, Petone, New Zealand
Get access Rights & Permissions [Opens in a new window]

Abstract

Five montmorillonites were analysed by 57Fe Mössbauer spectroscopy and their Fe3+ occupation in tetrahedral and octahedral sites assigned. The montmorillonites, with a range of IVFe3+ contents, were used in an attempt to correlate IVFe3+ content with VIFe3+cis- and trans-OH site occupation to verify the assertion that increasing IVFe3+ content directs VIFe3+ to cis-OH sites. However, VIFe3+ in montmorillonite appears to be located essentially in the trans-OH sites. The two doublets computer-fitted to the VIFe3+ Mössbauer resonance for montmorillonite appear to represent a distribution of a continuum of slightly different Fe3+ resonances, which arise from the variable atomic environment surrounding the VIFe3+ sites, rather than discrete cis- and trans-OH sites. Therefore Mössbauer spectroscopy cannot be used to demonstrate whether an increasing IVFe3+ content directs VIFe3+ substitution into particular sites for montmorillonites.

Type
Research Article
Information
Clay Minerals , Volume 22 , Issue 4 , December 1987 , pp. 387 - 394
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1987

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

Bancroft, G.M. (1973) Mössbauer Spectroscopy: An Introductionfor Inorganic Chemists and Geochemists, p.52. McGraw-Hill, UK.Google Scholar
Besson, G., Bookin, A.S., Dainyak, L.G., Rautureau, M., Tsipursky, S.I., Tchoubar, C. & Drits, V.A. (1983) Use of diffraction and Mössbauer methods for the structural and crystallo-chemical characterisation of nontronites. J. AppL Cryst. 16, 374–383.Google Scholar
Cardile, C.M. & Johnston, J.H. (1985) Structural studies of nontronites with different iron contents by 57Fe Mössbauer spectroscopy. Clays Clay Miner. 33, 295–300.Google Scholar
Cardile, C.M. & Johnston, J.H. (1986) 57Fe Mössbauer spectroscopy of montmorillonites: A new interpretation. Clays Clay Miner. 34, 307–313.Google Scholar
Cardile, C.M. & Slade, P.G. (1987) Structural study of a benzidine-intercalate high-tetrahedral-iron content vermiculite by 57Fe Mössbauer spectroscopy. Clays Clay Miner. 35, 203–207.Google Scholar
Coey, J.M.D. (1980) Clay minerals and their transformations studied with nuclear techniques. At. Energy Rev. 18, 73–123.Google Scholar
Drits, V.A., Plancon, A., Sakharov, B.A., Besson, G., Tsipursky, S.I. & Tchoubar, C. (1984) Diffraction effects calculated for structural models of K-saturated montmorillonite containing different types of defects. Clay Miner. 19, 541–561.Google Scholar
Ericsson, T., Wäppling, R. & Punakivl, K. (1977) Mössbauer spectroscopy applied to clay and related minerals. Geol. Fören. Förhandl. 99, 229–244.CrossRefGoogle Scholar
Goodman, B.A. (1976) The effect of lattice substitutions on the derivation of quantitative site populations from the Mössbauer spectra of 2:1 layer lattice silicates. J. Physique C6. 37, 819–823.Google Scholar
Heller-Kallai, L. & Rozenson, I. (1981) The use of Mössbauer spectroscopy of iron in clay mineralogy. Phys. Chem. Minerals 7, 223–238.CrossRefGoogle Scholar
Johnston, J.H. & Cardile, C.M. (1985) Iron sites in nontronite and the effect of interlayer cations from Mössbauer spectra. Clays Clay Miner. 33, 21–30.Google Scholar
Johnston, J.H. & Cardile, C.M. (1987) Iron substitution in montmorillonite, illite and glauconite by 57Fe Mössbauer spectroscopy. Clays Clay Miner. 35, 170–176.Google Scholar
Rozenson, I. & Heller-Kallai, L. (1977) Mössbauer spectra of dioctahedral smectites. Clays Clay Miner. 25, 94–101.Google Scholar
Tsipursky, S.I. & Drits, V.A. (1984) The distribution of octahedral cations in the 2:1 layers of dioctahedral smectites studied by oblique-texture electron diffraction. Clay Miner. 19, 177–193.CrossRefGoogle Scholar