Mine detail: Riverton Group

Previously called ''

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Location

Lat / long: 46.08528, -88.63672

Resource(M)

Primary: Iron
Ore: Hematite, Goethite
Gangue: Chert, Pyrite, Siderite, Stilpnomelane, Chlorite, Mica

Production

Operation type: Underground
Deposit type: Secondary Enrichment
Production size: Medium
Development status: Past Producer

Geology

Host rock:Riverton Iron-Formation
Host type:Iron Formation
Alteration processes:Chert and siderite to hematite and goethite in oxidation zones.

References

MRDSW028938
DEP10079409
Reference{Deposit:: 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. 45-56, 88-110.}{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES (1ST ED.): CLEVELAND, OHIO. P. 162.}{Deposit:: CROWELL, BENEDICT AND MURRAY, C.B., INC., 1914, 1917, 1923, 1927, 1930, THE IRON ORES OF LAKE SUPERIOR (2ND, 3RD, 5TH-7TH EDS.): CLEVELAND, OHIO. PP. 214, 270-271, 243-244, 315, 284-285 RESPECTIVLY.}{Deposit:: JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}
ReporterYeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)