Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeU
WorkingsUnderground
Materials
Ore mineralsHematite
GangueChert
Geology
Host rockIron Formation · Negaunee Iron-Formation
Associated rockStambaugh Formation
StructureMajor troughs; regional trends: E-W, NE-SW, NW-SE forming triangle, Troughs into which Iron formation has slumped.
Economic & production
Development statusPast Producer
First production1915
Last production1971
Identification
Deposit ID10068375
MRDS IDW001402
RegionNA
Data scoreB
Coordinates46.10917, -88.65811
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. 116.CROWELL BENEDICT AND MURRAY C.B. INC. 1917 1920 1923 1927 THE IRON ORES OF LAKE SUPERIOR (3RD-6TH EDS.): CLEVELAND OHIO. PP. 257 232-233 283 303-304.REED R.C. 1975 ONE THOUSAND MILLION TONS MICHIGAN IRON ORE SHIPMENTS THROUGH 1974 CIRCULAR 12 GEOLOGICAL SURVEY DIVISION OF MICHIGAN DEPT. OF NATURAL RESOURCES LANSING MICHIGAN 1975. P. 9.REED R.C. 1975, ONE THOUSAND MILLION TONS MICHIGAN IRON ORE SHIPMENTS THROUGH 1974 CIRCULAR 12 GEOLOGICAL SURVEY DIVISION OF MICHIGAN DEPT. OF NATURAL RESOURCES LANSING MICHIGAN 1975.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 59-62, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.LAKE SUPERIOR IRON ORES, 1952 P. 116.