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 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 production1881
Last production1890
Identification
Deposit ID10106108
MRDS IDW028625
Alternate namesManhattan
RegionNA
Data scoreB
Coordinates46.035, -88.37671
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. 163JOHNSON, A.M., AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 309-310, MICHIGAN DEPARTMENT OF NATURAL RESOURCES,