Mine detail: Ohio Mine

Previously called 'BeaufortNorwood'

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Location

Lat / long:

46.53667, -88.16226

Resource(M)

Primary:	Iron
Ore:	Hematite, Grunerite, Limonite
Gangue:	Chert, Magnetite, Hornblende, Actinolite, Garnet, Mica

Production

Operation type:	Unknown
Deposit type:	Secondary Enrichment
Production size:	Small
Development status:	Past Producer
Production years:	MINE CLOSED IN1957 AND REMAINED SHUT DOWN THROUGH 1958 AND 1959; THE MINE REOPENED IN 1960, BUT WAS IDLE IN 1962.
Last production ended:	1961

Geology

Host rock:	Bijiki Iron-Formation
Host type:	Iron Formation
Alteration processes:	Replacement of cherty beds by iron oxide and alteration of fe-silicates and carbonates to iron oxides

References

MRDS	W028538
DEP	10079317
Reference	{Deposit:: KLASNER, J. S., AND CANNON, W. F., 1978 , BEDROCK GEOLOGY OF THE SOUTHERN PART OF THE MICHIGAMME AND THREE LAKES QUADRANGLES, MARQUETTE AND BARAGA COUNTIES, MICHIGAN, USGS MAP 1 - 1078 .}{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952 , LAKE SUPERIOR IRON ORE (2ND ED ): CLEVELAND, OHIO, P. 87 .}{Deposit:: CROWELL, BENEDICT, AND MURRAY, C. B., INC., 1911 , THE IRON ORES OF LAKE SUPERIOR ( 1ST ED. ): CLEVELAND, OHIO, P. 65 .}{Deposit:: SECTION FILES, MICHIGAN GEOLOGICAL SURVEY, CLEVELAND-CLIFFS IRON CO., 1951 , MAP OF OHIO MINE AND VICINITY; 1950 - 1951 , OHIO MINE EXPLORATION, GEOLOGICAL SURVEY DIVISION OF THE MICHIGAN DEPT. OF NATURAL RESOURCES.}{Deposit:: U.S. BUREAU OF MINES, 1954-1994, MINERALS YEARBOOK [1953-1993]: WASHINGTON, D.C., U. S. GOVERNMENT PRINTING OFFICE, VARIOUS VOLUMES.}{Deposit:: JOHNSON, A, 1998, INVENTORY OF UNDERGROUND MINES, BARAGA COUNTY, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}
Reporter	Yeager, Keith (Cannon, W.), Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T., Anderson, Arlene (M. Gere)