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Influence of metasomatism on vanadium-based redox proxies for mantle peridotite

A.B. Woodland1,

1Goethe-Universität, Frankfurt am Main, Germany

L. Uenver-Thiele1,

1Goethe-Universität, Frankfurt am Main, Germany

H.-M. Seitz1

1Goethe-Universität, Frankfurt am Main, Germany

Affiliations  |  Corresponding Author  |  Cite as  |  Funding information

Woodland, A.B., Uenver-Thiele, L., Seitz, H.-M. (2018) Influence of metasomatism on vanadium-based redox proxies for mantle peridotite. Geochem. Persp. Let. 8, 11–16.

Deutsche Forschungsgemeinschaft (Wo652/15-1)

Geochemical Perspectives Letters v8  |  doi: 10.7185/geochemlet.1822
Received 11 April 2018  |  Accepted 23 July 2018  |  Published 7 September 2018
Copyright © The Authors

Published by the European Association of Geochemistry
under Creative Commons License CC BY 4.0




Figure 1 Comparison of ∆logƒO2 determined from spinel-based and clinopyroxene-based Fe3+-Fe2+ equilibria (see Supplementary Information). The 1:1 correlation line is shown for reference, along with the estimated uncertainty of the clinopyroxene-based oxybarometer of ±0.8 log units (Luth and Canil, 1993

Luth. R.W., Canil, D. (1993) Ferric iron in mantle-derived pyroxenes and a new oxybarometer for the mantle. Contributions to Mineralogy and Petrology 113, 236-248.

).
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Figure 2 (a) V/Sc and (b) V/Ga of clinopyroxene plotted as a function of ∆logƒO2 determined by spinel-based Fe3+-Fe2+ oxybarometry (see Supplementary Information).
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Figure 3 V concentration in different types of clinopyroxene plotted against their corresponding (a) Sc, (b) Ga and (c) Y contents, as well as (d) their Nd/Yb ratio.
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Figure 4 Variation in the clinopyroxene/silicate melt partition coefficient with ƒO2 at 1 bar and 1300 °C, along with Sc and Ga for reference as reported by Mallmann and O’Neill (2009)

Mallmann, G., O’Neill, H.St.C. (2009) The Crystal/Melt Partitioning of V during Mantle Melting as a Function of Oxygen Fugacity Compared with some other Elements (Al, P, Ca, Sc, Ti, Cr, Fe, Ga, Y, Zr and Nb). Journal of Petrology 50, 1765-1794.

. The arrow emphasises the effect of oxidation on DV in the ƒO2 range observed in our xenolith suite from the Massif Central (shaded area). See text.
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