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Resolute Mine, Keweenaw Co., Michigan, USA

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Tailings pile for the Resolute Mine

Resolute Mine, Keweenaw Co., Michigan, USA
Tailings pile for the Resolute Mine

Resolute Mine, Keweenaw Co., Michigan, USA
Latitude & Longitude (WGS84): 47° 25' 45'' North , 88° 2' 8'' West
Latitude & Longitude (decimal): 47.4291666667, -88.0355555556
Commodities (Major) - Copper
Deposit Type: Fissure Copper Veins
Development Status: Past Producer
Deposit Model: 96: Native Cu
Host Rock Unit: Portage Lake Volcanics
Host Rock: Basalt

An underground copper mine consisting of one shaft located near Mandan. The Resolute Mining Company was organized in 1864 and began work on the Resolute Fissure. Little is known of this company as no mining reports or ore shipments are known to exist. In 1899, the mine was reorganized as the Resolute Copper Company and work began to de-water and stabilize the shaft which was at a depth of nearly 400 feet in depth and 2,000 feet of drifting. After this point, very little is known of the mine or its operations. Minerals to be found at the piles include copper, prehnite, and greenstones.

Mineral List

4 entries listed. 4 valid minerals.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.



Kaminski-Hamka, T., 2011, The Copper Mines of Keweenaw County, Michigan. Copperlady Press, 150 pp.

The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed.

DeGood, L., 2011, Michigan Copper Mining Stocks and Bonds. 401 pp.

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