Latitude: 47°25'25"N
Longitude: 88°12'0"W
The Petherick Mining Company was organized in 1861 by the Copper Falls Mining Company. It consisted of 10 shafts and at least 2 adits. The mine ran steady from 1861 to 1868, and again from 1872 to 1877. In 1880, the mine was reorganized as the Ashbed Mining Company and work continued until 1884, at which time the mine shutdown. Exploratory work was conducted in 1898, 1900, and 1905, but was never re-opened. Fine copper, analcime, natrolite, and datolite crystals can be found here.
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., 44 pp.
Clarke, D.H., 1974, Copper Mines of Keweenaw; Copper Falls Mining Company, No. 6, 36 pp.
Mineral List
10 entries listed. 10 valid minerals.
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