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Indiana Mine, Winona, Greenland Township, Ontonagon Co., Michigan, USA
An underground copper mine consisting of two shafts between Mass City and Twin Lakes, MI. The Indiana Mining Co. was organized in 1862 and worked for three years until 1865. No copper is known to have been produced during this time. The company reorganized in 1909, but no rock was milled and the mine was abandoned. Copper and datolite can be found here. Micro collectors have also faired well on the piles.
Mineral List
21 entries listed. 19 valid minerals.
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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. USGS Prof. Paper 144, 238 pp.
The Copper Country Rock & Mineral Club (2001): Red Gold and Tarnished Silver, 2nd Ed., 44 pp.
Rocks & Min.:58:112.
Butler, B.S., and Burbank, W.S. (1929): The Copper Deposits of Michigan. USGS Prof. Paper 144, 238 pp.
The Copper Country Rock & Mineral Club (2001): Red Gold and Tarnished Silver, 2nd Ed., 44 pp.
Rocks & Min.:58:112.
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