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Melting oxygen fugacity

Equilibria 9.93 and 9.94 are similar to those proposed by Fincham and Richardson (1954) for native sulfur. According to these equilibria, the solute states of sulfur compounds depend on oxygen fugacity the total concentration of sulfur dissolved in the melt initially decreases with increasing /q, based on equation 9.93, and then increases again when equilibrium 9.94 becomes dominant. [Pg.640]

Oxygen fugacity fo directly affects the redox states of trace elements in melts (see, for instance, equation 10.45). Figure 10.12 shows the effects of fo on the oxidation state of Ti and V in an Na2Si205 melt at T = 1085 °C, according to the... [Pg.687]

Figure 10,12 Effects of oxygen fugacity on oxidation state of Ti and V in Na2Si205 melt at r = 1085 °C (experimental data from Johnston, 1964, 1965, and Johnston and Chelko, 1966). Figure 10,12 Effects of oxygen fugacity on oxidation state of Ti and V in Na2Si205 melt at r = 1085 °C (experimental data from Johnston, 1964, 1965, and Johnston and Chelko, 1966).
Righter, K., Drake, M. J. and Yaxley, G. (1999) Prediction of siderophile element metal-silicate partition coefficients to 20 GPa and 2800 °C the effects of pressure, temperature, oxygen fugacity, and silicate and metallic melt compositions. Physics of the Earth and Planetary Interiors, 100, 115—134. [Pg.517]

Dalpe C. and Baker D. R. (2000) Experimental investigation of large-ion hthophile-element, high-field-strength-element, and rare-earth-element partitioning between calcic amphibole and basaltic melt the effects of pressure and oxygen fugacity. Contrib. Mineral. Petrol. 140, 233-250. [Pg.1122]

Ehlers K., Grove T. L., Sisson T. W., Recca S. L., and Zervas D. A. (1992) The effect of oxygen fugacity on the partitioning of nickel and cobalt between oUvine, silicate melt, and metal. Geochim. Cosmochim. Acta 56, 3733—3743. [Pg.1146]

Ertel W., O Neill H. St. C., Dingwell D. B., and Spettel B. (1996) SolubiUty of tungsten in a haplobasaltic melt as a function of temperature and oxygen fugacity. Geochim. Cosmochim. Acta 60, 1171 — 1180. [Pg.1146]

Holloway J. R., Pan V., and Gudmundsson G. (1992) High-pressure fluid-absent melting experiments in the presence of graphite oxygen fugacity, ferric/ferrous ratio and dissolved CO2. Euro. J. Mineral. 4, 105—114. [Pg.1146]

Holzheid A., Borisov A., and Palme H. (1994) The effect of oxygen fugacity and temperature on solubilities of nickel, cobalt and molybdenum in silicate melts. Geochim. Cosmochim. Acta 58, 1975-1981. [Pg.1146]

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See also in sourсe #XX -- [ Pg.198 ]



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