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‘Corrensite-like minerals’ in the Taro and Ceno Valleys, Italy

Published online by Cambridge University Press:  09 July 2018

M. F. Brigatti  and
L. Poppi
M. F. Brigatti
Affiliation:
Istituto di Mineralogia e Petrologia dell'Università;, Via S. Eufemia 19, 41.100—Modena
L. Poppi
Affiliation:
Istituto di Mineralogia e Petrografia dell'Università, Porta S. Donato 1, 40.100 Bologna, Italy
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Abstract

Mineralogical properties (XRD, DTG) and chemical compositions of some chlorite-smectite interlayer minerals in alteration products of ophiolitic rocks from the Northern Apennines are presented and discussed. The presence of iron hydroxides and the continuous variation in Al2O3 content suggest that the corrensites are intermediate stages in the process of alteration of chlorite to smectite in an environment characterized by high element mobility. A thermal test to characterize the swelling component of the interlayer species is proposed.

Type
Research Article
Information
Clay Minerals , Volume 19 , Issue 1 , February 1984 , pp. 59 - 66
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1984

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