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Mine detail: Clark Manganese Deposit
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North America
United States
Michigan
Keweenaw
Previously called ''
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Location
Lat / long:
47.4569, -87.86503
Resource(M)
Tertiary:
Manganese
Discovery year:
1881
Production
Operation type:
Underground
Development status:
Past Producer
First production started:
1881
Geology
References
MAS
260830004
DEP
10194276
Reference
CONFIDENTIAL FILES, WAR MINERALS EXAMINATIONS,CLARK MINE, MI
Reporter
Eastern Field Operations Center (EFOC)