Evidence from Mössbauer spectroscopy of neo-formation of magnetite/maghemite in the soils of loess/paleosol sequences in China

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ID: 110328
1970
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Abstract
Samples of four different loess/paleosol couplets of a loess sequence in Huangling (China) have been studied with 57Fe Mössbauer spectroscopy. Each sample was separated into strongly, weakly and very weakly magnetic fractions. The iron mineralogy of the strongly magnetic fractions of both loess and soils consists of magnetite/maghemite and hematite together with some silicates. The soils contain some additional small-particle maghemite. From the spectral behaviour a similarity in terms of morphology and crystal chemistry for hematite throughout the whole section could be inferred. The ratio of iron in magnetite and maghemite to that in hematite differentiates well between the loess and soil samples. These results strongly suggest the neo-formation of magnetite/maghemite in the soils.
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Authors Vandenberghe, R. E.;Hus, J. J.;de Grave, E.;Vandenberghe, R. E.;Hus, J. J.;de Grave, E.;
Journal hyint
Year 1970
DOI
doi:10.1023/A:1012695310761
URL
http://adsabs.harvard.edu/abs/1998HyInt.117..359V/similar
Keywords
condensed matter physics Molecular nuclear physics heavy ions hadrons atomic optical and plasma physics surfaces and interfaces thin films

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