Diffusion, Atomic Ordering, and Mass Transport

1. Front Matter

   Pages i-xiv

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2. Molecular Dynamics and Diffusion in Silicate Melts

   • J. D. Kubicki, A. C. Lasaga

   Pages 1-50

3. Ising Models and Geological Applications

   • Charles R. Ross II

   Pages 51-90

4. Electrostatic Properties of Minerals from X-Ray Diffraction Data: A Guide for Accurate Atomistic Models

   • James W. Downs

   Pages 91-119

5. Compositional Zoning and Cation Diffusion in Garnets

   • Sumit Chakraborty, Jibamitra Ganguly

   Pages 120-175

6. Ionic Diffusion in Olivine

   • Masana Morioka, Hiroshi Nagasawa

   Pages 176-197

7. Nuclear Microanalysis: A Powerful Tool for Measuring Low Atomic Diffusivity with Mineralogical Applications

   • Olivier Jaoul, Violaine Sautter, François Abel

   Pages 198-220

8. Pressure-Enhanced Al/Si Diffusion and Oxygen Isotope Exchange

   • Julian R. Goldsmith

   Pages 221-247

9. Some Experimental Constraints on the Role of Hydrogen in Oxygen and Hydrogen Diffusion and Al-Si Interdiffusion in Silicates

   • Colin M. Graham, Stephen C. Elphick

   Pages 248-285

10. Strain Enhanced Diffusion in Feldspars

    • Matthew J. Kramer, Karl E. Seifert

    Pages 286-303

11. Mechanisms and Kinetics of Exsolution—Structural Control of Diffusion and Phase Behavior in Alkali Feldspars Alkali Feldspars

    • Ian Parsons, William L. Brown

    Pages 304-344

12. Grain-Boundary Diffusion Kinetics in Silicate and Oxide Minerals

    • Raymond Joesten

    Pages 345-395

13. Thermal Diffusion in Petrology

    • C. E. Lesher, D. Walker

    Pages 396-451

14. The Quasi-Stationary State Approximation to Fluid/Rock Reaction: Local Equilibrium Revisited

    • Peter C. Lichtner

    Pages 452-560

15. Back Matter

    Pages 561-567

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One of the fundamental objectives of physical geochemistry is to understand the evolution of geochemical systems from microscopic to regional and global scales. At present there seems to be a general recognition of the fact that internal properties of minerals record important aspects of the evolutionary history of their host rocks which may be unraveled by very fine scale observations. A major focus in the development of geochemical research in the last thirty years has been the application of classical thermodynamics to reconstruct the conditions at which the states of quenched mineralogical properties of rocks have equilibrated during the course of their evolution. While these works have funda­ mentally influenced our understanding ofthe physico-chemical history ofrocks, in recent years petrologists, mineralogists, and geochemists have been making greater efforts towards the application of kinetic theories in order to develop a better appreciation of the temporal details of geochemical processes. The present volume brings together a variety of current research on transport in systems of geochemical interest from atomic to outcrop scales. A major theme is atomic migration or diffusion, and its various manifestations on microscopic and macroscopic scales. Transport in the solid state is controlled by diffusion and is responsible for the states of atomic ordering and relaxation of composi­ tional zoning in minerals, development of compositional zoning during cooling, exsolution lamellae, and creep.

• chemistry
• diffusion
• geochemistry
• hydrogen
• kinetics
• mineral
• petrology

• Department of Geosciences, University of Arizona, Tucson, USA

  J. Ganguly

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