Geology 482: Low T Aqueous Geochemistry







Introduction: What is geochemistry - Different fields and applications. Basic chemical principles. Basics of calculus. The Hydrologic cycle: types of water. General Controls on Natural Water Chemistry.



Element association & distribution; Mineral and Crystal Chemistry: Ionization Potential, Electron affinity; Valence, Bonding, Oxidation state; Periodic Table; Distribution & Assciation of elements; Coordination numbers, Controls of crystal structures; Isomorphism, Goldschmidt’s rules for substitution; Camouflage, Capture & Admission

3 - 8

Chemical equilibrium, The Phase rule, Phase diagrams, Reversible and irreversible chemical reactions, Balancing reactions, Law of Mass Action, Le Chatelier’s principle, Solubility products, Common ion effect, Activity, Fugacity

9 - 12

Introduction to thermodynamics: 1st, 2nd, and 3rd laws; Gibbs Free Energy, Enthalpy, Entropy, Heat capacity, thermal expansion, compressibility. Some key relations. Applications.

13 - 17

Water Chemistry: Properties of water; Acids & bases; pH, Dissociation constants, Ionic concentrations, Buffers, pH-pC diagrams.


18 - 21

Solution – Mineral equilibria: carbonates; silicates;

Chemistry of groundwater; chemistry of seawater, Analysis of water samples, Mixing, Dilution, Evaporation.

Activity - activity diagrams.


22 - 23

Kinetics: Diffusion; Nucleation; Growth

23, 24

Oxidation and Reduction; Eh – pH diagrams



26 - 29

Clay Minerals; Adsorption – Desorption reactions

30 - 31

Acid Mine Drainage: