Abstract
Mutual interaction of redox pairs was evaluated using the concept of intrinsic oxygen fugacity in a melt. A “rose of \(f_{O_2 } \) trends” was proposed for the visualization of possible directions of mutual oxidation/reduction of redox pairs for a given melt composition. Missing thermodynamic data were estimated for vanadium redox pairs in sodium disilicate melt, and the V5+/V4+/V3+/V2+ tetrad was quantitatively described. The redistribution of vanadium in different valence states was estimated during quenching to glass of model iron-free and natural iron-bearing melts.
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Original Russian Text © A.A. Borisov, 2013, published in Petrologiya, 2013, Vol. 21, No. 4, pp. 339–349.
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Borisov, A.A. Mutual interaction of redox pairs in silicate melts: V5+/V4+/V3+/V2+ tetrad and other equilibria. Petrology 21, 305–315 (2013). https://doi.org/10.1134/S0869591113040036
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DOI: https://doi.org/10.1134/S0869591113040036