The mineralogy and morphology of iron and manganese oxides in an imperfectly-drained Scottish soil

The distribution, mineralogy and morphology of the iron and manganese oxides in an imperfectly-drained Scottish soil, with a diffuse Fe/Mn pan, have been examined using electron microscopy, X-ray diffraction and chemical dissolution. The Fe oxide mineralogy above and within the Fe-pan is dominated b...

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Bibliographic Details
Published in:Geoderma 1991, Vol.50 (3), p.219-237
Main Authors: Birnie, A.C., Paterson, E.
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
Soil and rock geochemistry
Soils
Surficial geology
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Summary:The distribution, mineralogy and morphology of the iron and manganese oxides in an imperfectly-drained Scottish soil, with a diffuse Fe/Mn pan, have been examined using electron microscopy, X-ray diffraction and chemical dissolution. The Fe oxide mineralogy above and within the Fe-pan is dominated by lepidocrocite, with subsidiary amounts of ferrihydrite. In the Mn-pan itself, feroxyhyte is present and below this, goethite predominates. Vernadite is the main manganese oxide mineral within the Mn-pan. The conditions necessary for the synthesis of these minerals in the laboratory are broadly consistent with the soil conditions implied from their location within the soil profile.
ISSN:0016-7061
1872-6259
DOI:10.1016/0016-7061(91)90036-S