Mine detail: Loomis Mine

Previously called 'Plymouth-Loomis'

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Location

Lat / long: 46.47139, -89.9401

Resource(M)

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

Production

Operation type: Surface
Deposit type: Secondary Enrichment
Production size: Small
Development status: Past Producer
First production started: 1953
Last production ended: 1955

Geology

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

References

MRDSW030504
DEP10079775
Reference{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES (2ND ED.): CLEVELAND, OHIO, P. 56.}{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:: REED, R.C., 1975, ONE THOUSAND MILLION TONS-MICHIGAN IRON ORE SHIPMENTS THROUGH 1974, CIRCULAR 12, GEOLOGICAL SURVEY DIVISION OF MICHIGAN DEPT. OF NATURAL RESOURCES, LANSING, MICHIGAN.}
ReporterYeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T.