The Solubility of Water in Alkali-Alumino-Silicate Melts to 8 Kbars

  • S. Oxtoby
  • D. L. Hamilton


To investigate some aspects of the mechanisms of solubility of water in silicate melts we have determined the maximum amount of water which can dissolve in a number of alkali-alumino-silicate melts as a function of temperature and pressure. The melt compositions used are shown in Table I and are plotted in Fig. 1. They may be conveniently considered to be modifications of the feldspar albite (Ab), Na2OAl2O36SiO2; e.g., the composition marked AbQ is albite plus 4SiO2 and the one marked 2:1:12 is 2 albite minus 1Al2O3. For future comparison with published data, the molecular weights used in calculating the mole percent solubilities from the weight percent values are one-half of the above compositions, i.e., Ab is NaAlSi3O8 with a molecular weight of 262.
Fig. 1

Mole percent plot of the melt compositions used in this study. The figures in brackets are the mole proportions Na2O·Al2O3·SiO2. Ab = albite, Jd — jadeite, AbQ = albite-quartz eutectic at 1 bar pH2O.


Singular Point Water Solubility Mole Percent Future Comparison Hydrous Melting 
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  1. 1.
    G. C. Kennedy, C. J. Wasserburg, H. C. Heard, and R. C. Newton, Am. Jour. Sci. 260, 501 (1962).CrossRefGoogle Scholar
  2. 2.
    C. W. Burnham, Geochim. et Cosmochim. Acta. 39, 1077 (1975).CrossRefGoogle Scholar
  3. 3.
    C. W. Burnham and N. F. Davis, Am. Jour. Sci. 274, 902 (1974).CrossRefGoogle Scholar
  4. 4.
    H. S. Shaw, Geochemical Transport and Kinetics, Carnegie Publication 634 (1974).Google Scholar

Copyright information

© Springer Science+Business Media New York 1979

Authors and Affiliations

  • S. Oxtoby
    • 1
  • D. L. Hamilton
    • 1
  1. 1.Manchester UniversityManchesterEngland

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