Mine detail: Chicago Mines (Sparta)

Previously called 'Wakefiled-Chicago'

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Location

Lat / long: 46.48528, -89.94649

Resource(M)

Primary: Iron
Ore: Hematite
Gangue: Chert, Pyrite, Martite

Production

Operation type: Underground
Deposit type: Secondary Enrichment
Production size: Small
Development status: Past Producer
First production started: 1892
Last production ended: 1915

Geology

Host rock:Ironwood Iron-Formation
Host type:Iron Formation
Alteration processes:Chert to hematite in oxidation zones.

References

MRDSW031540
DEP10080408
Reference{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES (2ND ED.): CLEVELAND, OHIO. P. 54.}{Deposit:: CROWELL, BENEDICT, AND MURRAY, C.B., INC., 1911, THE IRON ORES OF LAKE SUPERIOR (1ST ED.): CLEVELAND, OHIO. P. 14.}{Deposit:: 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.}{Deposit:: JOHNSON, A.M., AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, GOGEBIC COUNTY, P. 32-34, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}
ReporterYeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)