Description
A. Randall Discovered Low-Grade Magnetic Material During The Survey Of The Fourth Principal Meridian.
Commodities
PrimaryIron
Commodity typeM
Deposit
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
Orebody formSTRATABOUND
Ore controlOxidation And Leaching Of Unaltered Banded-Iron Formation To Soft Iron-Oxide Ore Bodies.
Materials
Ore mineralsGoethite, Hematite
Geology
Host rockIron Formation · Ironwood Formation
StructureN-Dipping Sediments; Regional Trends Are East To West., An E-W Linear Iron Formation Going From Gogebic, Mi, To Ironwood, Mi, And To Mellen, Wi, And A Bit Farther W.
Tectonic settingCanadian Shield
AlterationGogebic Iron Range Is In The Chlorite Metamorphic Zone In The Least Metamorphosed Area Of The Upper Peninsula.
Economic & production
Development statusPast Producer
Production years1885 TO 1912 EXCEPT FOR 1894 TO 1896, 1908, AND 1911.
First production1885
Last production1912
Discovery year1848
Identification
Deposit ID10082658
MRDS IDW062007
Alternate namesHarmony
RegionNA
Data scoreB
Coordinates46.44639, -90.18789
References
EMATITSCHMIDT, 1980: USGS BULLETIN 1460LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P. 55.