Michigan · Houghton County
Past Producer
Franklin
Houghton County, Michigan, United States
Copper
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USGS source ↗
Commodities
Primary
Copper
Commodity type
M
Economic & production
Development status
Past Producer
Identification
Deposit ID
10170618
Region
NA
Data score
D
Coordinates
47.1406, -88.57085
References
SOPER EK OSBON CC USGS BULLETIN 728 1922 PAGE 98