The effects of excess silicon on immiscibility in the nepheline-kalsilite system

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ID: 308432
2000
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Abstract
Solvi of the nepheline-kalsilite mineralogical system have been investigated by conducting both chemical homogenization and unmixing experiments for two nepheline-kalsilite series that differ in excess silicon. Reversed phase equilibria demonstrate that relatively small differences in Si content produce a 130 degrees to 150 degrees C difference in the critical temperature of the solvus. The higher critical temperature of the more siliceous series correlates well with greater Gibbs free energies and enthalpies of K-Na mixing. The nepheline-kalsilite system documents the substantial effect of one chemical substitution (\[\]Si = (K,Na)Al) on the thermodynamic mixing properties of another (K = Na) and in turn the significant influence of Si on phase behavior.
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openalex_W2012406784 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Guy L. Hovis
Journal american journal of science
Year 2000
DOI
10.2475/ajs.300.3.238
URL
https://ajs.scholasticahq.com/article/61331.pdf
Keywords Keywords not found

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