Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
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 production1882
Last production1942
Identification
Deposit ID10079375
MRDS IDW028632
RegionNA
Data scoreB
Coordinates46.03917, -88.37476
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. 118.