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Chlorites and chloritic mixed-layer minerals in profiles on ultrabasic rocks from Moyango (Ivory Coast) and Angiquinho (Brazil)

Y. Noack and F. Colin
Chlorites and chloritic mixed-layer minerals in profiles on ultrabasic rocks from Moyango (Ivory Coast) and Angiquinho (Brazil)
Clay Minerals (June 1986) 21 (2): 171-182

Abstract

Different types of chlorite and related mixed-layer minerals have been found in profiles developed on ultrabasic rocks of Ivory Coast and Brazil. Normal chlorites, with low K and Ni contents, are of hydrothermal origin and are situated at the bottom of the alteration profile. At the top of the profile the mixed-layer minerals are Ni-chlorite/vermiculite, which formed under weathering conditions, or K-chlorite/vermiculite, resulting from the alteration of mica. The Ni-content of the chlorite/vermiculite can reach 10% NiO.


ISSN: 0009-8558
Coden: CLMIAF
Serial Title: Clay Minerals
Serial Volume: 21
Serial Issue: 2
Title: Chlorites and chloritic mixed-layer minerals in profiles on ultrabasic rocks from Moyango (Ivory Coast) and Angiquinho (Brazil)
Author(s): Noack, Y.Colin, F.
Affiliation: Univ. Poitiers, Lab. Petrol. Surface, Poitiers, France
Pages: 171-182
Published: 198606
Text Language: English
Publisher: Mineralogical Society, London, United Kingdom
References: 35
Accession Number: 1987-001665
Categories: SoilsGeochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
S34°00'00" - N05°15'00", W74°00'00" - W34°00'00"
N04°19'60" - N10°40'00", W08°45'00" - W02°30'00"
Secondary Affiliation: ORSTOM, FRA, France
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 1987
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