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Laurium Mine, Laurium, Houghton Co., Michigan, USA
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Photo: R.D.Green
Latitude: 47°14'15"N
Longitude: 88°26'35"W
 
 
An underground copper mine located just south of Laurium. The prospect was discovered in 1904 by diamond drilling exploration, and a shaft was sunk in 1907. In 1909, the Calumet & Hecla Consolidated Copper Co. took over operations and continued mining until 1920 when the mine closed because of water problems. The shaft reached the 12th level (approx. 1,000 ft. deep) and some exploratory drifting was done. For variety of minerals, Laurium provides perhaps the best collecting in the Keweenaw, especially for the micro-mineral collector.

Mineral List

Atacamite
Calcite
Chalcocite
'Chlorite Group'
Copper
Cuprite
Datolite
Epidote
Hematite
'K Feldspar
var: Adularia'

Kinoite
Laumontite
Malachite
Microcline
'Pumpellyite'
Pumpellyite-(Mg)
Quartz
Saponite
Silver


19 entries listed. 16 valid minerals.

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References

The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed., 44 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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