Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
Ore controlStructurally controlled, associated with faulting.
Materials
Ore mineralsHematite, Goethite, Limonite
GangueChert, Magnetite, Sericite, Chlorite
Geology
Host rockIron Formation
AlterationChert to hematite (goethite, limonite) in oxidation zones.
Economic & production
Development statusPast Producer
First production1887
Last production1900
Identification
Deposit ID10079392
MRDS IDW028655
Alternate namesCherry Valley
RegionNA
Data scoreB
Coordinates46.09722, -88.27032
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. 21-23, 88-110.LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES, (1ST ED.): CLEVELAND, OHIO. P. 156.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 234-235, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.