Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit sizeU
WorkingsUnderground
Materials
Ore mineralsHematite, Goethite
Geology
Host rockIron Formation · Negaunee Iron-Formation
StructureMarquette syncline; regional trends: E-W.
Economic & production
Development statusPast Producer
Production yearsMINE PRODUCTION CEASED IN JAN 1971, SHIPMENTS FROM STOCKPILES CONTINUED TO JUL 1971.
First production1870
Last production1971
Identification
Deposit ID10068368
MRDS IDW001393
RegionNA
Data scoreC
Coordinates46.49028, -87.59252
References
VAN HISE AND BAYLEY, 1897, U. S. G. S. MONOGRAPH 28.LAKE SUPERIOR IRON ORE ASSOC., 1952, LAKE SUPERIOR IRON ORES.JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM. IN PRECAMBRIAN OF NORTHERN MICH., G. S. A. BULL., VOL. 66, P. 1455 - 1488.U.S. BUREAU OF MINES, 1972, MINERALS YEARBOOK 1971: WASHINGTON, D.C., U. S. GOVERNMENT PRINTING OFFICE, V.II.