One of the seven incline shafts of the Centennial Copper Co. For more information about the mine history, see the "Centennial Mine" listing. Minerals common here are copper crystals, silver, datolite, and very gemmy epidote/quartz crystals. At last check, the piles were almost gone due to the fact that Houghton Co. owns the piles and uses them for their activities.
References
Butler, B.S., and Burbank, W.S., 1929, The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed.
Mineral List
18 entries listed. 17 valid minerals.
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