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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
Other regions containing this locality:Keweenaw Peninsula, Michigan, USA


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 valid minerals.

Rock Types Recorded

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Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Stenian
1000 - 1200 Ma
Portage Lake Volcanics

Age: Stenian (1000 - 1200 Ma)

Stratigraphic Name: Portage Lake Volcanics

Description: Lava flows, mostly basalt, andesite and felsite flows and subordinate interflow sedimentary rocks.

Comments: This unit is the same as unit Yp on paper map of Sims (1992). Description is taken from that unit description.

Lithology: Major:{basalt}, Minor:{basaltic andesite}, Incidental:{rhyolite, sandstone mudstone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, P. 230-231, SITE ID # 420078, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.

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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