Sampling of Copper-Bearing Keweenawan Rocks of Northwestern Wisconsin Open-file report; contains unpublished data that has not yet been peer-reviewed. Metallic Minerals Rocks and Minerals Data and Resources WOFR1972-09 Sampling of Copper-Bearing Keweenawan Rocks of Northwestern Wisconsin Dutton, C.E.; 1972 Report: 19 p. + 1 plate Download Related Collections Open-File Report View Open-File Report
