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A XANES calibration for determining the oxidation state of iron in mantle garnet

Berry, Andrew John; Yaxley, Gregory; Woodland, Alan; Foran, Garry

Description

Iron K-edge X-ray absorption near edge structure (XANES) spectra were recorded for synthetic garnets of the almandine-skiagite (Fe3Al2Si3O12-Fe3Fe2Si3O12), andradite-skiagite (Ca3Fe2Si3O12-Fe3Fe2Si3O12), Fe-knorringite-skiagite (Fe3Cr2Si3O12-Fe3Fe2Si3O12), and andradite-grossular (Ca3Fe2Si3O12-Ca3Al2Si3O12) solid solutions. Fe3+/ΣFe varied systematically in these samples from 0 to 1. The variation in the energy and intensity of spectral features as a function of Fe3+/ΣFe was investigated to...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
URI: http://hdl.handle.net/1885/55504
Source: Chemical Geology
DOI: 10.1016/j.chemgeo.2010.08.019

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