Complexing and Hydrothermal Ore Deposition provides a synthesis of fact, theory, and interpretative speculation on hydrothermal ore-forming solutions. This book summarizes information and theory of the internal chemistry of aqueous electrolyte solutions accumulated in previous years. The scope of the discussion is limited to those aspects of particular interest to the geologist working on the problem of hydrothermal ore genesis. Wherever feasible, fundamental principles are reviewed. Portions of this text are devoted to calculations of specific hydrothermal equilibriums in multicomponent solutions at elevated temperatures, including a general examination and evaluation of the solution chemistry and geochemical parameters involved in aqueous transport and deposition of the ore-forming metals. This publication is intended for geologists, but is also beneficial for students conducting research on the components of soil and rock.