Commodities
TertiaryIron
Commodity typeM
Economic & production
Development statusPast Producer
First production1873
Identification
Deposit ID10268182
Alternate namesKeystone, Iron Duke
RegionNA
Data scoreD
Coordinates46.5089, -87.96283
References
LAKE SUPERIOR IRON ORES, MINING DIRECTORY AND STATISTICAL REPUBLISHED BY THE LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P