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Contributions to Mineralogy and Petrology

, Volume 83, Issue 1–2, pp 136–140 | Cite as

The ferric-ferrous ratio of natural silicate liquids equilibrated in air

  • A. Kilinc
  • I. S. E. Carmichael
  • M. L. Rivers
  • R. O. Sack
Article

Abstract

Results of chemical analyses of glasses produced in 46 melting experiments in air at 1,350° C and 1,450° C on rocks ranging in composition from nephelinite to rhyolite have been combined with other published data to obtain an empirical equation relating in \((X_{{\text{Fe}}_{\text{2}} {\text{O}}_{\text{3}} }^{{\text{liq}}} /X_{{\text{FeO}}}^{{\text{liq}}} )\) to T, \(\ln f_{{\text{O}}_{\text{2}} } \) and bulk composition. The whole set of experimental data range over 1,200–1,450° C and oxygen fugacities of 10−9.00 to 10−0.69 bars, respectively. The standard errors of temperature and \(\log _{10} f_{{\text{O}}_{\text{2}} } \) predictions from this equation are 52° C and 0.5 units, respectively, for 186 experiments.

Keywords

Oxygen Experimental Data Chemical Analysis Silicate Standard Error 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • A. Kilinc
    • 1
  • I. S. E. Carmichael
    • 1
  • M. L. Rivers
    • 1
  • R. O. Sack
    • 1
  1. 1.Lawrence Berkeley Laboratory and Department of Geology and GeophysicsUniversity of CaliforniaBerkeleyUSA

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