Mine detail: Groveland Mine

Previously called ''

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Location

Lat / long:

45.9925, -87.98142

Resource(M)

Primary:	Iron, Manganese
Ore:	Magnetite, Hematite
Gangue:	Quartz, Calcite, Diopside, Garnet, Tremolite, Actinolite, Cummingtonite
Orebody form:	TABULAR: IRREGULAR

Production

Operation type:	Unknown
Deposit type:	Chemical Sedimentation
Production size:	Large
Development status:	Past Producer
Production years:	1891; 1900-1904; 1907-1913. THE GROVELAND LOW-GRADE IRON PROJECT BEGAN IN AUG 1957. IN 1959 GROVELAND SHIPPED ITS FIRST JASPILITE ORE. IN JAN 198,1 THE MINE WAS CLOSED PERMANENTLY.
First production started:	1891
Last production ended:	1982

Geology

Host rock:	Vulcan Iron Formation
Host type:	Iron Formation
Associated rock:	Granite Dikes
Structure:	Felch trough ; regional trends: E-W, Overturned syncline
Alteration processes:	Leaching of silica or replacement by iron oxides or a combination of these processes.

References

MRDS	W001399
DEP	10068373
Reference	{Deposit:: CUMBERLIDGE, J. T. AND STONE, J. G., 1964, THE VULCAN IRON FM. AT GROVELAND MINE, IRON MIN., MICH., ECON. GEOL., V. 59, P. 1094 - 1106.}{Deposit:: DUTTON, C. E. AND ZIMMER, P. W., 1968, IRON ORE DEP. OF MENOMINEE DIST., MICH., IN ORE DEP. OF U. S. 1933 - 1967, THE GRATON-SALES VOL., A. I. M. E., P. 538 - 549.}{Deposit:: JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM IN PRECAMBRIAN OF NORTHERN MICH., G. S. A. BULL., VOL. 66, P. 1455 - 1488.}{Deposit:: JAMES, CLARK, LAMEY AND PETTIJOHN, 1961, GEOL. OF CENTRAL DICKINSON CO., U. S. G. S. PROF. PAPER 310, P. 176.}{Deposit:: U.S. BUREAU OF MINES, 1954-1994, MINERALS YEARBOOK [1953-1993]: WASHINGTON, D.C., U. S. GOVERNMENT PRINTING OFFICE, VARIOUS VOLUMES.}{Deposit:: 1964 OTHER THE HANNA MINING CO. - SEE GEN. REFERENCES F1}{Production:: ITEM 8) LAKE SUPERIOR IRON ORES, 1952, P.115. ITEM 4) THE MINERAL INDUSTRY OF MICHIGAN, 1970; 1972, P. 10-11. MINERALS YEARBOOKS FOR APPROPRIATE YEARS.}
Reporter	Cannon, Suzanne S., Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T.