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Allouez Mine, Allouez, Keweenaw Co., Michigan, USA

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Latitude & Longitude (WGS84): 47° 17' 19'' North , 88° 24' 47'' West
Latitude & Longitude (decimal): 47.2886111111, -88.4130555556


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 List

Mineral list contains entries from the region specified including sub-localities

17 valid minerals.

Regional Geology

This 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 data will improve over time as more accurate maps and data sets are added.

Stenian1000 - 1200 MaPortage Lake Volcanics

Major:: {basalt},Minor:: {andesite},Incidental:: {rhyolite, mudstone}

Portage Lake Volcanics - Lava flows, mostly basalt, andesite and felsite flows and subordinate interflow sedimentary rocks.

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

Mesoproterozoic1000 - 1600 MaMesoproterozoic volcanic: mafic rocks

Volcanic: mafic rocks

Mesoproterozoic1000 - 1600 MaMesoproterozoic mixed volcanic, volcaniclastic and sedimentary rocks

Mixed volcanic, volcaniclastic and sedimentary rocks

This designation includes Precambrian iron-formation-bearing sedimentary and volcanic sequences, as well as mixed sedimentary and volcanic or volcaniclastic sequences.


References for regional geology:

Data provided by Macrostrat.org

Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .

USGS compilers. State geologic map data. State Maps.

Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.


Localities in this Region

USA

The above list 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

Rocks & Minerals: 21:664; 58:111; 76(3):156-188.

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.

Mineral and/or Locality  
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