This volume in Advances in Physical Geochemistry presents the latest synthesis of theory and experimental data pertaining to structural and magnetic phase transitions in a variety of geochemically important minerals. The book is the first to cover the impact of this rapidly progressing area of solid state physics in earth sciences and reflects its growing significance for mineralogy and petrology.
Table of Contents1. Toward a Thermodynamic Understanding of Feldspars: Order Parameters of Na-Feldspar and the I?-P? Phase Transition in Anorthite.- 2. Incommensurate Phase Transitions in Quartz and Berlinite.- 3. Phase Separation in Quadrilateral Pyroxenes and Olivines.- 4. Multicritical Phase Relations in Minerals.- 5. Equation of State and Possible Critical Phase Transitions in MgSiO3 Perovskite at Lower-Mantle Conditions.- 6. High-Spin to Low-Spin Transition of Iron(II) Oxides at High Pressures: Possible Effects on the Physics and Chemistry of the Lower Mantle.- 7. Molecular Dynamics Studies of Polymorphism of SiO2 at High Pressures: A Possible New Cubic Polymorph with High Density.- 8. Charge Localization and Associated Crystallographic and Magnetic Phase Transitions in Ilvaite, a Mixed Valence Iron Silicate.- 9. Magnetic Phase Transitions in Silicate Minerals.- 10. Magnetic Phase Transition in Olivines M2SiO4 (M = Mn, Fe, Co, FexMn1?x).- 11. The Spin Glass State in Garnet Mixed Crystals: New Evidence from Neutron Scattering and Macroscopic Measurements.- 12. Polytypism and Equilibrium Phase Transitions: In Situ Observation of the Polytypic Phase Transition 2H-12R in PbI2.