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  2. Copper mining in Michigan - Wikipedia

    en.wikipedia.org/wiki/Copper_mining_in_Michigan

    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.

  3. List of mines in Michigan - Wikipedia

    en.wikipedia.org/wiki/List_of_mines_in_Michigan

    Name County Years Material Coordinates Adventure mine: Ontonagon: 1850–1920: copper: Alabastine Mine: Kent: 1907– gypsum: Arcadian mine: Houghton: 1898–1908: copper

  4. List of Copper Country mines - Wikipedia

    en.wikipedia.org/wiki/List_of_Copper_Country_mines

    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. These include both large-scale commercial ventures and small operations.

  5. Quincy Mine - Wikipedia

    en.wikipedia.org/wiki/Quincy_Mine

    The mine was the first Michigan copper mine to switch from fissure mining to amygdaloid mining, when the recently discovered Pewabic amygdaloid lode was found to cross Quincy property in 1856. [9] High-grade fissure veins contained large, pure masses of copper, but the masses could take days or even months to extract, at high cost.

  6. Final permits aren't yet issued for Lake Superior copper mine ...

    www.aol.com/final-permits-arent-yet-issued...

    The Presque Isle River in Michigan's Upper Peninsula empties into Lake Superior in the Porcupine Mountain Wilderness State Park. Environmentalists say that a new copper mine, which will be the ...

  7. Copper Country - Wikipedia

    en.wikipedia.org/wiki/Copper_Country

    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 ...

  8. Minong Mine Historic District - Wikipedia

    en.wikipedia.org/wiki/Minong_Mine_Historic_District

    The Minong Mine is a historic mine site located west of McCargoe Cove campground on Isle Royale National Park, Michigan, United States. The district contains both the remnants of a 19th-century copper mine and remains of pre-contact mining activity. [ 3 ]

  9. Minesota Mine - Wikipedia

    en.wikipedia.org/wiki/Minesota_Mine

    The Minesota Mine is a former copper mine near Rockland, Ontonagon County in the Upper Peninsula of the U.S. state of Michigan.The Minesota (the single "n" in the name was a mistake in the original incorporation papers) was one of the most productive and famous early mines in the Michigan Copper Country.