Mine detail: Mather Mine

Previously called ''

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Location

Lat / long:

46.49861, -87.6328

Resource(M)

Primary:	Iron
Ore:	Hematite, Goethite
Orebody form:	STRATABOUND

Production

Operation type:	Unknown
Deposit type:	Chemical Bedded
Production size:	Yes
Development status:	Past Producer
Production years:	MATHER PRODUCED IRON ORE FROM 1941 TO 1979. IT WAS THE LAST UNDERGROUND IRON MINE IN MICHIGAN. IRON ORE SHIPMENTS FROM STOCKPILES CONTINUED AT LEAST TO 1983. CRUDE RED HEMATITE IRON OXIDE-PIGMENT SHIPMENT FROM STOCKPILES CONTINUED TO AT LEAST 1992.
First production started:	1941
Last production ended:	1979

Geology

Host rock:	Negaunee Iron-Formation
Host type:	Iron Formation
Structure:	Marquette syncline; regional trends: E-W.

References

MRDS	W001392
DEP	10068367
Reference	{Deposit:: VAN HISE AND BAYLEY, 1897, U. S. GEOLOGICAL SURVEY MONOGRAPH 28.}{Deposit:: LAKE SUPERIOR IRON ORE ASSOC., 1952, LAKE SUPERIOR IRON ORES.}{Deposit:: JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM. IN PRECAMBRIAN OF NORTHERN MICHIGAN, G. S. A. BULL., VOL. 66, P. 1455 - 1488.}{Deposit:: GRATON-SALES VOL. A. I. M. E., 1968, MARQUETTE DIST., (IN) ORE DEPOSITS OF THE U. S., 1933 - 1967, P. 508 - 517.}{Deposit:: U.S. BUREAU OF MINES, 1954-1994, MINERALS YEARBOOK [1953-1993]: WASHINGTON, D.C., U. S. GOVERNMENT PRINTING OFFICE, VARIOUS VOLUMES.}{Deposit:: PUFFETT: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 788.}{Deposit:: 1970 GEOL MAP G. SIMMONS; JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, MARQUETTE COUNTY, P. 15-16, 300-304, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}{Production:: MINERALS YEARBOOKS FOR APPROPRIATE YEARS.}
Reporter	Cannon, Suzanne S., Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T., Anderson, Arlene (M. Gere)