Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
Ore controlStructural-footwall quartzite and cross-cutting dikes form 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 production1923
Last production1925
Identification
Deposit ID10106204
MRDS IDW031545
RegionNA
Data scoreB
Coordinates46.46306, -89.88566
References
LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES (1ST ED.): CLEVELAND, OHIO. P. 188.PRINZ, W.C., HUBBARD, H.A., 1975, PRELIMINARY MAY 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. 255-256, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.