Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
Ore controlStructurally controlled in synclinal body.
Materials
Ore mineralsHematite, Goethite
GangueChert, Pyrite, Siderite, Stilpnomelane, Chlorite, Mica
Geology
Host rockIron Formation
AlterationChert and siderite to hematite and goethite in oxidation zones
Economic & production
Development statusPast Producer
First production1891
Last production1909
Identification
Deposit ID10079376
MRDS IDW028633
Alternate namesFairbanks
RegionNA
Data scoreB
Coordinates46.10806, -88.32115
References
JAMES, H.L., DUTTON, C.E., PETTIJOHN, F.J., WIER, K.L., 1968, GEOLOGY AND ORE DEPOSITS OF THE IRON RIVER, CRYSTAL FALLS DISTRICT, IRON COUNTY, MICHIGAN. WASHINGTON, U.S. GOVT. PRINTING OFFICE,1968. PP. 45-56, 88-110.LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES (1ST ED.): CLEVELAND, OHIO. P. 157.CROWELL, BENEDICT, AND MURRAY, C.B., INC., 1911, THE IRON ORES OF LAKE SUPERIOR (1ST ED.): CLEVELAND, OHIO. P. 119-120.HANNA, T.A., 1902, STATE OF MICHIGAN MINES AND MINERAL STATISTICS, MARQUETTE, MICHIGAN. P. 81.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 238-239, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.