Precious- and base-metal mineralization in the west-central Vermillion district, portions of St. Louis, Lake, and Cook counties, northeastern Minnesota / by Henry V. Alminas, John B. McHugh, and E.C. Perry, Jr. ; field work done in cooperation with the Minnesota Geological Survey.
Publication Info.
[Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 1992.
[Washington, D.C.] : United States Government Printing Office