Computer Science
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985gecoa..49.1775n&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 49, Issue 8, pp.1775-1779
Computer Science
15
Scientific paper
In an investigation of Sm, Sc, Sr, and Ti partitioning between diopside and silicate melt, et al. (1983) showed that the compositional dependence of multicomponent exchange equilibria can not be eliminated by the application of the melt model of and (1972), and that the propagation of analytical error is an important contributor in the observed internal error in the calculated equilibria for those exchange reactions. We can demonstrate that the compositional dependence of single component distribution coefficients can be reduced below analytical error by the application of the two-lattice melt model first reported by and (1979) in a study of major element partitioning between pyroxene and melt. This model was later used for the calculation of major, minor and trace element partitioning by and (1983). The two-lattice model is a modified version of the Bottinga-Weill model used by (1976) for plagioclase-melt equilibria, and differs from that model in the assumed role of Al. The and (1983) model has been modified here to assume Ti to mix in silicate melts as a network former. Single component distribution coefficients were used in place of multicomponent reactions in order to reduce the propagated analytical and experimental error.
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