Noble Gas Isotope Evidence for Mantle Volatiles in the Cu-Mo Porphyry and Main Stage Polymetallic Veins at Butte, Montana

Albert H Hofstra, USGS Central Region Offices, Denver, CO, United States, Brian G Rusk, Western Washington University, Bellingham, WA, United States, Andrew H Manning, USGS Geology, Geophysics, and Geochemistry Science Center, Denver, United States, Andrew G Hunt, U.S. Geological Survey, Denver, CO, United States, Gary P. Landis, USGS Central Region Offices Denver, emeritus, Denver, CO, United States and Denver Inclusion Analysis Laboratory