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Potassium-Sodium Ratios in Aqueous Solutions and Coexisting Silicate Melts

J. B. Gammon, M. Borcsik, Heinrich Holland

Abstract

Silicate melts were equilibrated with aqueous chloride solutions at temperatures between 770 degrees and 880 degrees C and a total pressure of 1.4 to 2.4 kilobars. The ratio of potassium to sodium in the aqueous phase was (0.74 +/- 0.06) times the corresponding ratio in the coexisting melt over the entire range of temperature and pressure for all chloride concentrations between 0.2 and 4.2 moles per kilogram.

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Key concepts: Aqueous solution, Sodium, Potassium, Chemistry, Sodium silicate, Silicate, Chloride, Phase (matter)