Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
Ore controlStratigraphically controlled.
Materials
Ore mineralsHematite, Goethite
GangueChert, Pyrite, Siderite, Stilpnomelane, Chlorite, Mica
Geology
Host rockIron Formation · Riverton Iron-Formation
AlterationChert and siderite to hematite and goethite in oxidation zones.
Economic & production
Development statusPast Producer
First production1926
Last production1968
Identification
Deposit ID10106120
MRDS IDW028936
Alternate namesHomer Group
RegionNA
Data scoreB
Coordinates46.10917, -88.64533
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.THE STATE TAX COMMISSION OF MICHIGAN, 1940, APPRAISAL OF IRON MINES AND COPPER MINES, GEOLOGICAL SURVEY DIVISION OF THE MICHIGAN DEPT. OF NATURAL RESOURCES, LANSING, MICHIGAN, 1940. P. 158.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 208-209, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.