Sixth in a series of articles on the mines and minerals of Michigan's copper Country
THE MICHIGAN COPPER DISTRICT stretches in a southwest-northeast direction along the western Upper Peninsula for approximately 100 miles, from the White Pine mine in Ontonagon County to Copper Harbor in Keweenaw County.
Copper mineralization occurs in two types of deposits in the district: (1) the sediment-hosted stratiform sulfide (chalcocite) deposit at the White Pine mine and (2) the ...