Thermodynamic Models for Crystalline Solutions

  • Surendra K. Saxena
Part of the Minerals, Rocks and Inorganic Materials book series (MINERALS, volume 8)


Composition of coexisting minerals occurring in rocks or in experiments are the main source of data to be used in obtaining the information on the thermodynamic behaviour of silicate crystalline solutions. It is, therefore, necessary to use certain solution models to relate the observed compositional variables to the thermodynamic functions of mixing. Although such models are based on specific statistical theory and employ certain assumptions regarding the molecular forces in the crystalline lattice, the equations obtained for the thermodynamic functions of mixing are mathematically equivalent to those of other mathematical models which are not bound to any special physical interpretation. The regular solution model of Guggenheim (1952) is considered in detail in this chapter.


Activity Coefficient Thermodynamic Model Thermodynamic Function Zeroth Approximation Excess Function 
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Copyright information

© Springer-Verlag Berlin · Heidelberg 1973

Authors and Affiliations

  • Surendra K. Saxena
    • 1
    • 2
  1. 1.Department of GeologyUniversity of DelhiDelhi 7India
  2. 2.Department of Geology, Brooklyn CollegeCity University of New YorkBrooklynUSA

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