Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeU
Ore controlStructurally controlled on flank of syncline.
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 production1942
Last production1958
Identification
Deposit ID10079387
MRDS IDW028649
RegionNA
Data scoreB
Coordinates46.05611, -88.3706
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, 1952, LAKE SUPERIOR IRON ORES (2ND ED.): CLEVELAND, OHIO. P. 108.SECTION FILES, MICHIGAN GEOLOGICAL SURVEY, NORTH RANGE MINING CO., 1944, 1946, SECTION FILES OF THE GEOLOGICAL SURVEY DIVISION OF THE MICHIGAN DEPARTMENT OF NATURAL RESOURCES, LANSING, MICHIGAN.JOHNSON, A.M. AND GROTH, E.M., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 38-40, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.