Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeL
Ore controlStructural-footwall quartzite and cross-cutting dikes forming ore troughs.
Materials
Ore mineralsHematite
GangueChert, Pyrite, Martite
Geology
Host rockIron Formation · Ironwood Iron-Formation
AlterationChert to hematite in oxidation zones
Economic & production
Development statusPast Producer
First production1890
Last production1926
Identification
Deposit ID10079776
MRDS IDW030505
Alternate namesAsteroid-North Mikado Mine, Wells & Miner Mine
RegionNA
Data scoreB
Coordinates46.47583, -89.98427
References
LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES (2ND ED.): CLEVELAND, OHIO, PP. 54-55.CROWELL, BENEDICT, AND MURRAY, C.B., INC., 1911, 1914, 1917, 1920, 1923, THE IRON ORES OF LAKE SUPERIOR (1ST-5TH EDS.): CLEVELAND, OHIO, PP. 83-84; 163-164, 168-169; 214-215, 220-221; 192-193, 197-198; 242-243, 247-248.PRINZ, W.C., HUBBARD, H.A., 1975, PRELIMINARY MAP OF THE WAKEFIELD QUADRANGLE, GOGEBIC COUNTY, MICHIGAN. GEOLOGICAL SURVEY DIVISION OF THE MICHIGAN DEPT. OF NATURAL RESOURCES, LANSING, MICHIGAN.JOHNSON, A.M., AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, GOGEBIC COUNTY, P. 49-62, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.