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GEOREF RECORD

The influence of aluminum on iron oxides; Part 1, The influence of Al on Fe oxide formation from the Fe(II) system

R. M. Taylor and U. Schwertmann
The influence of aluminum on iron oxides; Part 1, The influence of Al on Fe oxide formation from the Fe(II) system
Clays and Clay Minerals (December 1978) 26 (6): 373-383

Abstract

The influence of Al on the products formed by aerial oxidation at pH 5.5-7 and 20 degrees C of Fe(II) chloride, sulfate and carbonate solutions, was examined. In all cases Al at levels Al/Al + Fe = 0.09-0.30 inhibited the formation of gamma phases (lepidocrocite and maghemite) in favor of goethite under conditions where, in the absence of Al, these gamma phases formed. The influence of Al in these laboratory studies was supported by field observations. At higher levels of Al, ferrihydrite formation was favored. This effect of Al was seen to be the result of a slowing down in the hydrolysis/oxidation rate of the Fe(II) system. The presence of Al not only changed the direction of mineral formation, but also caused the formation of Al substitued goethites which resembled in particle size and morphology the natural aluminiferous goethite extracted from a soil.


ISSN: 0009-8604
Coden: CLCMAB
Serial Title: Clays and Clay Minerals
Serial Volume: 26
Serial Issue: 6
Title: The influence of aluminum on iron oxides; Part 1, The influence of Al on Fe oxide formation from the Fe(II) system
Pages: 373-383
Published: 197812
Text Language: English
Summary Language: Russian
Summary Language: German
Summary Language: French
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 19
Accession Number: 1980-011298
Categories: Geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. tables
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 1980
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