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Calumet & Hecla Mine, Calumet, Calumet Township, Houghton Co., Michigan, USA
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An underground copper mine consisting of 96 levels with 16 incline shafts and one vertical shaft (Red Jacket). Formed from the consolidation of the Calumet, Hecla, Portland, and Scott Mining Cos. in 1871. In 1923 the Allouez, Ahmeek, Centennial, Calumet and Hecla, and Osceola Mining Cos. merged to form the Calumet and Hecla Consolidated Copper Mining Co. All operations ceased in 1968 following a labor strike. Excellent mineral collecting, especially at #9, 10, and 12.

Mineral List

Mineral list contains entries from the region specified including sub-localities
Analcime
Baryte
Calcite
Chalcocite
Chalcopyrite
'Chlorite Group'
Copper
Cuprite
Datolite
Epidote
'Halfbreed'
'K Feldspar
var: Adularia'

Laumontite
Malachite
Marcasite
Microcline
Orthoclase
Powellite
Prehnite
'Pumpellyite'
Pyrite
Quartz
var: Agate
Silver
Sphalerite
Tenorite
Titanite


36 entries listed. 22 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

Rocks & Min.:58:109 & 64:150.

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.

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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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