Complexing and Hydrothermal Ore Deposition
International Series of Monographs on Earth Science
- 1st Edition - January 1, 1964
- Latest edition
- Author: Harold C. Helgeson
- Editor: Dean Earl Ingerson
- Language: English
Complexing and Hydrothermal Ore Deposition provides a synthesis of fact, theory, and interpretative speculation on hydrothermal ore-forming solutions. This book summarizes… Read more
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.
Preface
Acknowledgments
Summary
Chapter I. Introduction
Concepts, Definitions and Limitations
Chapter II. Thermo-chemical Parameters of Hydrothermal Complex Formation
Thermodynamic Relationships
Stabilities of Complexes at 25°C and One Atmosphere Pressure
Standard Entropy of Association
Standard Enthalpy of Association
Dissociational Equilibria
Degree of Formation of Complexes and Ligands
Complexing as a Function of Temperature
Thermodynamic Approximation of Dissociation Constants at Elevated Temperatures
Solvation and Complexing
Individual Ion Activity Coefficients
Complexing as a Function of Pressure
Complexing as a Function of Concentration
Summary
Chapter III. Solution Equilibria in a Portion of the System PbS-NaCl-HCl-H2O at Elevated Temperatures
Distribution of Species
Approximation of Thermo-chemical Data
Equilibrium Constants
Individual Ion Activity Coefficients
Calculation of Solution Equilibria
Results and Discussion
Galena Solubility
Complex Formation
Uncertainty of Results
Comparison with Experimental Data
Evaluation by Analogy with Thermo-chemical Consideration of a Portion of the System Ag2SO4-HNO3-H2O to 200°C
Summary of Conclusions
Chapter IV. Distribution of Species in Solution and the Controls of Hydrothermal Ore Deposition
Composition of Hydrothermal Solutions
Distribution of Species
pH of Hydrothermal Solutions
Complexes
Depositional Controls
Phase Relations in a Portion of the System NaCl-H2O
Geothermal Gradients
Reactions between Solutions and Their Environments
Summary
References
Author Index
Subject Index
- Edition: 1
- Latest edition
- Published: January 1, 1964
- Language: English
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