Mixtures and Mineral Reactions [Paperback]

Considerable progress has been made in our understanding of the physicochemical evolution of natural rocks through systematic analysis of the compositional properties and phase relations of their mineral assemblages. This book brings together concepts of classical thermodynamics, solution models, and atomic ordering and interactions that constitute a major basis of such analysis, with appropiate examples of application to subsolidus petrological problems. This book is written for an audience with a senior undergraduate level background in chemistry. Derivations of fundamental thermodynamic relations which are in need of reemphasis and clarification are presented.Considerable progress has been made in our understanding of the physicochemical evolution of natural rocks through systematic analysis of the compositional properties and phase relations of their mineral assemblages. This book brings together concepts of classical thermodynamics, solution models, and atomic ordering and interactions that constitute a major basis of such analysis, with appropiate examples of application to subsolidus petrological problems. This book is written for an audience with a senior undergraduate level background in chemistry. Derivations of fundamental thermodynamic relations which are in need of reemphasis and clarification are presented.1 Thermodynamic Functions of Solutions.- 1.I Fugacity, Activity, and Standard States.- 1.II Partial Molar Quantities, Ideal Solutions, and Excess Functions.- 1.III Dilute Solutions, and More on Standard States.- 2 Mixing Models and Activity-Composition Relations.- 2.I Mixing Models: Macroscopic Formulations.- 2.II Statistical Thermodynamic Formulation of Entropy.- 2.III Ionic and Reciprocal Solutions.- 2.IV Regular and Athermal Solutions.- 2.V Mixing Parameters: Microscopic Considerations.- 2.VI Quasi-Chemical Model.- 2. VII Comparison of Mixing Models.- 2. VIII Cation Ordering and a-X Relations.- 3 Phase Separation in Solutions.- 3.I Free Energy-Coml£Z