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Mössbauer Effect Studies of Iron in Kaolin. I. Structural Iron

Published online by Cambridge University Press:  02 April 2024

S. A. Fysh ,
J. D. Cashion  and
P. E. Clark
S. A. Fysh*
Affiliation:
Department of Physics, Monash University Clayton, Victoria 3168, Australia
J. D. Cashion
Affiliation:
Department of Physics, Monash University Clayton, Victoria 3168, Australia
P. E. Clark*
Affiliation:
Department of Physics, Monash University Clayton, Victoria 3168, Australia
*
1Now at BHP Co. Ltd., Central Research Laboratories, P.O. Box 188, Wallsend, New South Wales 2287 Australia.
2Now at Department of Applied Physics, Capricornia I.A.E., Rockhampton, Queensland, 4700 Australia.
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Abstract

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57Fe Mössbauer spectra of a cleaned Weipa, Australia, kaolin showed that a considerable fraction of the structural iron exhibits paramagnetic relaxation between 4°K and 300°K, the first time that this has been observed for ferric ions in a mineral. The sample also contained a very fine particle ferric oxide/oxyhydroxide phase, probably of secondary origin.

Резюме

Резюме

Мессбауеровские спектры 57Fе чистого каолинита Вайпа из Австралии показали, что значительная фракция структурного железа проявляет парамагнитную релаксацию между 4° и 300°К. Это наблюдалось первый раз для железных ионов в минерале. Образец содержал также очень мелкую фазу окиси/оксигидрата железа, вероятно, вторичного происхождения. [Е.О.]

Résumé

Résumé

57Eisen-Mössbauerspektren eines gereinigten Kaolin von Weipa, Australien, zeigte, daß ein beachtlicher Teil des in der Struktur eingebauten Eisens paramagnetische Relaxation zwischen 4°K und 300°K zeigt. Dies wurde zum ersten Mal bei einem Fe3+-Ion in einem Mineral beobachtet. Die Probe entheilt außerdem eine sehr feinteilige Fe3+-Oxid/Oxihydroxid-Phase, die wahrscheinlich sekundär entstanden ist. [U.W.]

Résumé

Résumé

Des spectres de Mössbauer 57Fe d'un kaolin nettoyé de Weipa, Australie ont montré qu'une fraction considérable du fer structural exhibait une relaxation paramagnétique entre 4°K et 300°K, la première fois que ceci a été observé pour des ions ferriques dans un minéral. L’échantillon contenait aussi une phase de particule ferrique oxide/oxyhydroxide très fine, probablement d'origine secondaire. [D.J.]

Keywords

IronKaoliniteMössbauer effectParamagnetismStructural substitution
Type
Research Article
Information
Clays and Clay Minerals , Volume 31 , Issue 4 , August 1983 , pp. 285 - 292
Copyright
Copyright © 1983, The Clay Minerals Society

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