Volcanic Belt, northern Wisconsin, Michigan and east-central Minnesota, USA: Implications for future exploration...LLC, 34898 University Ave, Cambridge, MN 55008, USA A R T I C L E I N F O A B S T R A C T Keywords:...Belt (PVB) of northern Wisconsin, Michigan and east-central Minnesota, USA. These cycles are responsible... The most significant are at the Flambeau and Back Forty deposits where Au-Ag-enriched indigenous gossans...coupled with the discovery of the large Back Forty zinc-gold deposit in 2001, repeal of Wisconsin’s mining |