DOI: 10.1346/ccmn.1985.0330404. Structural Studies of Nontronites with Different Iron Contents by <sup>57</sup>Fe Mössbauer Spectroscopy

Structural Studies of Nontronites with Different Iron Contents by 57Fe Mössbauer Spectroscopy

10.1346/ccmn.1985.0330404

Crossref journal-article

Cambridge University Press (CUP)

Clays and Clay Minerals (56)

Abstract

AbstractThe 57Fe Mössbauer spectra of a series of untreated and Ca-saturated nontronites showed a predominant Fe3+ resonance which was computer-fitted with two Fe3+ doublets defining iron in non-equivalent cis-FeO4(OH)2 octahedral sites. In most spectra a doublet indicating tetrahedral Fe3+ was fitted and in one untreated sample a doublet indicating interlayer Fe3+ was identified. In a further untreated sample the interlayer iron was present as Fe2+. Upon Ca-saturation the interlayer iron was displaced. It also appears that the interlayer iron was present in at least two different interlayer sites. From the computer-fitted data it was clear that the interlayer cations have a significant effect on the Mössbauer resonances of iron in the two non-equivalent cis-octahedral and the tetrahedral sites of nontronite.

Bibliography

Cardile, C. M., & Johnston, J. H. (1985). Structural Studies of Nontronites with Different Iron Contents by 57Fe MÃ¶ssbauer Spectroscopy. Clays and Clay Minerals, 33(4), 295â300.

Authors 2

C. M. Cardile (first)
J. H. Johnston (additional)

References 11 Referenced 33

Johnston, J. H. and Cardile, C. M. , 1985 Magnetic ordering of a nontronite at 4.2°K Clays & Clay Minerals (in press).
10.1346/CCMN.1978.0260215
10.1346/CCMN.1977.0250204
10.1346/CCMN.1980.0280205
10.1180/claymin.1983.018.2.01
10.1346/CCMN.1976.0240201
10.1180/claymin.1983.018.1.02
{'volume-title': 'Mössbauer Spectroscopy: An Introduction for Inorganic Chemists and Geochemists', 'year': '1973', 'author': 'Bancroft', 'key': 'S0009860400012416_CR1'} / Mössbauer Spectroscopy: An Introduction for Inorganic Chemists and Geochemists by Bancroft (1973)
10.1346/CCMN.1982.0300108
10.1107/S0021889883010651
10.1346/CCMN.1985.0330103

Dates

Type	When
Created	18 years, 11 months ago (Sept. 12, 2006, 10:55 p.m.)
Deposited	3 weeks ago (Aug. 11, 2025, 5:17 a.m.)
Indexed	2 weeks, 3 days ago (Aug. 14, 2025, 9:55 p.m.)
Issued	40 years, 1 month ago (Aug. 1, 1985)
Published	40 years, 1 month ago (Aug. 1, 1985)
Published Online	1 year, 4 months ago (April 2, 2024)
Published Print	40 years, 1 month ago (Aug. 1, 1985)

Funders 0

None

BibTeX

@article{Cardile_1985, title={Structural Studies of Nontronites with Different Iron Contents by 57Fe Mössbauer Spectroscopy}, volume={33}, ISSN={1552-8367}, url={http://dx.doi.org/10.1346/ccmn.1985.0330404}, DOI={10.1346/ccmn.1985.0330404}, number={4}, journal={Clays and Clay Minerals}, publisher={Cambridge University Press (CUP)}, author={Cardile, C. M. and Johnston, J. H.}, year={1985}, month=aug, pages={295–300} }

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