Proterozoic Belt Supergroup clastic-hosted Cu-Ag deposits in Montana,
SEDEX and VMS massive sulfide-type deposits in Alaska in cooperation with and funded by the U.S. Bureau of Mines and U.S. Geological Survey,
Mississippi Valley type Zn-Pb deposits in Peru, and most recently,
high sulfidation type epithermal precious metal deposits in Montana. Research continues on high sulfidation-type deposits in addition to pluton-hosted and placer gold deposits in Montana.