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 years1880-1894. LUDINGTON WAS ABANDONED IN 1931.
First production1880
Last production1894
Discovery year1849
Identification
Deposit ID10082689
MRDS IDW062039
Alternate namesBradley, Chapin
RegionNA
Data scoreB
Coordinates45.82528, -88.06781
References
DUTTON, C. E. AND ZIMMER, P. W., 1968, IRON ORE DEPOSITS OF MENOMINEE DISTRICT, MICHIGAN, (IN) ORE DEPOSITS OF THE UNITED STATES, 1933 - 1967: A.I.M.E., THE GRATON-SALES VOLUME, V. 1, P. 538 - 549.JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM IN PRECAMBRIAN OF NORTHERN MICHIGAN, G.S.A. BULLETIN, V. 66, P. 1455 - 1488.LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES: CLEVELAND, OHIO, 2D ED., 334 P.LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES.VAN HISE AND BAYLEY, 1897: U.S.G.S. MONOGRAPH 28.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.LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P. 107-128.