Theoretical and experimental studies of the thermodynamics, kinetics and molecular mechanisms of aqueous processes and water-rock interactions, especially at elevated temperatures and pressures. Particular emphasis on metals and their speciation and transport. Solubility, calorimetric, spectroscopic, electrochemical, phase equilibrium and other experimental studies. Field-based studies of ore deposits, geothermal systems and the environment. Equilibrium and reaction-path modeling of geochemical processes. Applications to ore deposits, hydrometallurgy, exploration geochemistry, environmental geochemistry, radioactive waste disposal and medical geology. Particular interest in rare earth (REE) and platinum group elements (PGE).

Past Affiliations

Professor, American Indian Studies, Interdisciplinary Programs, College of Letters, Arts and Social Sciences, University of Idaho (past)

Professor, Department of Geological Sciences, College of Science, University of Idaho (past)

Professor, Environmental Sciences, University of Idaho (past)
1995 - current

Associate Professor, Earth and Planetary Sciences
1985 - 1991

Mathematics, Geology, Geography
PhD, Princeton University, Geology, 1985
MA, Princeton University, Geology, 1982
BA, Hamilton College, Geology and Chemistry, 1980
earth science geochemistry economic geology trace elements
English, French, German, Russian, Spanish

2005 Inaugural Distinguished Faculty Award, College of Science, University of Idaho

2003-2004 Environmental Science Program Outstanding Faculty Award, Environmental Sciences Porgram, University of Idaho

2004 Julian R. Boldy Award, Mineral Deposits Division of the Geological Association of Canada

American Chemical Society
American Geophysical Union
Association of Exploration Geochemists
Geochemical Society
Mineralogical Association of Canada
Sigma Xi, The Scientific Research Society
Society of Economic Geologists