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13-oz. nugget of native copper, Keweenaw County, Michigan.Size 9.5 x 8.6 x 1.7 cm. Native copper from the Keweenaw Peninsula Michigan about 2.5 inches (6.4 cm) long. Copper Country is highly unusual among mining districts in that the copper mined was predominantly in its elemental ("native") form, rather than in the form of compounds (mostly oxides and sulfides) that form the basis of the ...
Many copper mines have existed in the Copper Country of the U.S. state of Michigan. These include both large-scale commercial ventures and small operations. There are hundreds of ancient mining pits in and around the Copper Country area, especially on Isle Royale (several of these were developed).
Copper mining in the Upper Peninsula boomed, and from 1845 until 1887 (when it was exceeded by Butte, Montana) the Michigan Copper Country was the nation's leading producer of copper. In most years from 1850 through 1881, Michigan produced more than three-quarters of the nation's copper, and in 1869 produced more than 95% of the country's copper.
Cliff mill - Clifton, Michigan; Copper Falls mill - Southwest of Eagle Harbor, Michigan; Delaware mill - Delaware, Michigan; Dodgeville mill and pits - Dodgeville, Michigan; Humboldt mill - In Champion, Michigan. Planned to be used as a part of the new Eagle mine project; Huron mill; Isle Royale mill - Two miles east of Houghton, Michigan
The peninsula is part of Michigan's Copper Country region, as the region was home to the first major copper mining boom in the United States. Copper mining was active in this region from the 1840s to the 1960s. The peninsula is bisected by the Keweenaw Waterway, a partly natural, partly artificial waterway serving as a canal.
The state of Michigan acquired these land parcels after they had been stripped of their old growth trees in the late 19th and early 20th centuries; today, the state manages the land for reforestation. In many cases, the second-growth trees that have sprouted throughout Copper Country land are pulpwood trees such as aspen and birch. [1]