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Quincy Mine, Hancock, Houghton Co., Michigan, USA
This page kindly sponsored by Paul Brandes

Latitude: 47°8'12"N
Longitude: 88°34'30"W
 
 
An underground copper mine that began exploration in 1846 and organized in 1848. Began operations working a fissure vein of native copper until 1856 when the Pewabic amygdaloid lode was discovered crossing the property. Operated continuosly from 1848 to 1931. Closed from 1931 to 1937, then re-opened from 1937 to 1945. 9 shafts were driven; 2 of these shafts, #2 and #6, reached 9,280 ft. deep on the incline (approx. 6,800 ft vertical). No. 7 shaft is unique in that is was driven on a catenary curve. In 99 years of operation, Quincy produced 424,000 tons of native copper from the underground workings. A large amount of native silver was also recovered from the mine. Starting in 1947 and continuing through 1968, another 50,000 tons of copper was recovered from reclamation activities in Torch Lake. Small pieces of copper, silver, and datolite can be found in the parking lots around the #2 shafthouse and the hoist building. Today the mine is owned by the Quincy Mine Hoist Association, which gives surface and underground tours of the mine during the summer months.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Analcime
Ankerite
Azurite
Calcite
'Chabazite'
'Chlorite Group'
Chrysocolla
Copper
Cuprite
Datolite
Epidote
Gypsum
'Halfbreed'
Halite
Laumontite
Malachite
Muscovite
var: Sericite
Paratacamite
Prehnite
Pumpellyite-(Mg)
Pumpellyite-(Mg)
var: Chlorastrolite

Quartz
Shuiskite
Silver


30 entries listed. 20 valid minerals.

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

Henwood, W.J. (1871): Observations on Metalliferous Deposits: On the Native Copper of Lake Superior. Transactions of the Royal Geological Society of Cornwall 8(1), 385-489.

Butler, B.S., and Burbank, W.S., 1929, The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.

Kilpela, T, 1995, The Hard Rock Mining Era in the Copper Country. 89 pp.

Lankton, L.D., and Hyde, C.K., 1982, Old Reliable, The Quincy Mine Hoist Association, Hancock, MI, 159 pp.

Tschernich, R. (1992): Zeolites of the World, 115

The Mineralogical Record: 23: 42-50.

External Links


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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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