Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
Ore controlStructural-footwall quartzite and cross-cutting dikes forming ore troughs.
Materials
Ore mineralsHematite
GangueChert, Pyrite, Martite
Geology
Host rockIron Formation · Ironwood Iron-Formation
AlterationChert to hematite in oxidation zones.
Economic & production
Development statusPast Producer
Identification
Deposit ID10106203
MRDS IDW031539
RegionNA
Data scoreB
Coordinates46.485, -89.94204
References
LAKE SUPERIOR IRON ORE ASSOCIATION. 1938, LAKE SUPERIOR IRON ORES (1ST ED.): CLEVELAND, OHIO. P. 185.PRINZ, W.C., HUBBARD, H.A., 1975, PRELIMINARY MAP OF THE WAKEFIELD QUADRANGLE, GOGEBIC COUNTY, MICHIGAN. GEOLOGICAL SURVEY DIVISION OF THE MICHIGAN DEPT. OF NATURAL RESOURCES, LANSING, MICHIGAN.