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 an anticline.
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 production1916
Last production1935
Identification
Deposit ID10106109
MRDS IDW028630
RegionNA
Data scoreB
Coordinates46.09528, -88.35226
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. 160.CROWELL, BENEDICT, AND MURRAY, C.B., INC., 1917, 1920, 1923, 1927, 1930, THE IRON ORES OF LAKE SUPERIOR. (3RD, 4TH, 5TH, 6TH, 7TH EDS.): CLEVELAND, OHIO. PP. 264, 238, 288, 310-311, 281 RESPECTIVLY.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 270-274, MICHIGAN DEPARTMENT OF NATURAL RESOURCES,