This revised edition of the text provides coverage of the entire field of geochemistry, including a basic review of the fundamental physico-chemical principles of solid, liquid, and gaseous states of matter. It includes an in-depth discussion of the geochemistry of the solid state and trace element geochemistry. It also discusses interionic static potentials in crystals, thermodynamic properties based on lattice vibrations, and crystalline defects and their effect on stability relations of minerals.;Other chapters cover elemental properties and crystal chemistry; the thermochemistry of silicate melts; an introduction to petrogenetic systems; and the geochemistry of aqueous and gaseous phases. A new chapter provides an introduction to the principles of isotope geochemistry.