Allouez Mine, Allouez, Keweenaw Co., Michigan, USA
|Latitude & Longitude (WGS84):||47° 17' 19'' North , 88° 24' 47'' West|
|Latitude & Longitude (decimal):||47.28861,-88.41306|
|Other regions containing this locality:||Keweenaw Peninsula, Michigan, USA|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
An underground copper mine consisting of two shafts located near Allouez, just north of Calumet. The Allouez Mining Co. was organized in 1859, but work didn't start until 1869 on the Allouez Conglomerate lode. Work continued until 1877, when it was leased on tribute until the company resumed control in 1880. In 1885 the mine was again leased to tributers until 1889 when the company resumed control. In 1923, the Allouez Mining Co. was absorbed by C&H and mining operations ceased shortly after. Minerals that can be found here include copper, silver, cuprite, malachite, and some nice chrysocolla.
Mineral ListMineral list contains entries from the region specified including sub-localities
17 valid minerals.
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
1000 - 1200 Ma
|Portage Lake Volcanics|
Age: Stenian (1000 - 1200 Ma)
Stratigraphic Name: Portage Lake Volcanics
Comments: This unit is the same as unit Yp on paper map of Sims (1992). Description is taken from that unit description.
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. 
Localities in this Region
Kilpela, T, 1995, The Hard Rock Mining Era in the Copper Country. 89 pp.
Butler, B.S., and Burbank, W.S., 1929, The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.