Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeBanded Iron-Rich Sedimentary Deposits
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
WorkingsUnderground
Orebody formSTRATABOUND
Materials
Ore mineralsHematite, Magnetite, Goethite
GangueQuartz
Geology
Host rockIron Formation · Vulcan Iron Formation
StructureMajor troughs into which Iron fm. has slumped; regional trends are E-W to N
AlterationLeaching of silica or replacement by iron oxides or a combination of these processes.
Economic & production
Development statusPast Producer
Production years1914 TO 1927, SHIPPED ORE EACH OF THESE YEARS.
First production1914
Last production1927
Discovery year1849
Identification
Deposit ID10082697
MRDS IDW062047
Alternate namesAmasa Porter Mine
RegionNA
Data scoreB
Coordinates46.19917, -88.41088
References
LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES, 2D ED.: CLEVELAND, OHIO, LAKE SUPERIOR IRON ORE ASSOCIATION, 334 P.BAYLEY, R.W., AND OTHERS, 1966, GEOLOGY OF THE MENOMINEE IRON-BEARING DISTRICT, MICHIGAN AND WISCONSIN: U.S.G.S. PROFESSIONAL PAPER 513, 96 P. VAN HISE, C.E.., AND LEITH, C.E.., 1911, THE GEOLOGY OF THE LAKE SUPERIOR REGION: U.S.G.S MONOGRAPH 52, 641 P.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 277-281, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P. 107-128.