107, pp. 1089–1113 Strata-Bound Fe-Co-Cu-Au-Bi-Y-REE Deposits of the Idaho Cobalt Belt: Multistage...Mineralization in a Magmatic-Related Iron Oxide Copper-Gold System* JOHN F. SLACK†U.S. Geological Survey, National...geochemical studies of strata-bound Fe-Co-Cu-Au-Bi-Y-rare-earth element (REE) deposits of the Idaho cobalt...magmatic-hydrothermal processes in an iron oxide copper-gold (IOCG) system. Deposits of the Idaho cobalt belt...commonly, chalcopyrite rich with locally abundant gold, native bismuth, bismuthinite, xenotime, allanite |