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Improving soil clay minerals studies by high-gradient magnetic separation

Published online by Cambridge University Press:  09 July 2018

D. Righi  and
P. Jadault
D. Righi
Affiliation:
UA 721 du CNRS, Laboratoire de Pédologie, Faculté des Sciences, 86022 Poitiers Cédex, France
P. Jadault
Affiliation:
UA 721 du CNRS, Laboratoire de Pédologie, Faculté des Sciences, 86022 Poitiers Cédex, France
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Abstract

High-gradient magnetic separation (HGMS) performed on the clay fraction (< 1 µm) of acid soils facilitates the separation and concentration of mineral fractions according to their Fe and Mg contents. As a result, smectitic layers formed by weathering of a chlorite were identified although they were not detected in the bulk sample. The concentration in the non-magnetic fraction of minerals with an intergrade vermiculite-chlorite behaviour enabled more accurate information to be obtained on these minerals.

Type
Research Article
Information
Clay Minerals , Volume 23 , Issue 2 , June 1988 , pp. 225 - 232
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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