Commodities
PrimaryIron, Manganese
Commodity typeM
Deposit
Deposit typeChemical Sedimentation
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeL
WorkingsSurface
Orebody formTABULAR: IRREGULAR
Ore controlVulcan iron fm. and the troughs into which the formation has slumped
Materials
Ore mineralsMagnetite, Hematite
GangueQuartz, Calcite, Diopside, Garnet, Tremolite, Actinolite, Cummingtonite
Geology
Host rockIron Formation · Vulcan Iron Formation
Associated rockGranite Dikes
StructureFelch trough ; regional trends: E-W, Overturned syncline
AlterationLeaching of silica or replacement by iron oxides or a combination of these processes.
Economic & production
Development statusPast Producer
Production years1891; 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 production1891
Last production1982
Identification
Deposit ID10068373
MRDS IDW001399
RegionNA
Data scoreA
Coordinates45.9925, -87.98142
References
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.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.JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM IN PRECAMBRIAN OF NORTHERN MICH., G. S. A. BULL., VOL. 66, P. 1455 - 1488.JAMES, CLARK, LAMEY AND PETTIJOHN, 1961, GEOL. OF CENTRAL DICKINSON CO., U. S. G. S. PROF. PAPER 310, P. 176.U.S. BUREAU OF MINES, 1954-1994, MINERALS YEARBOOK [1953-1993]: WASHINGTON, D.C., U. S. GOVERNMENT PRINTING OFFICE, VARIOUS VOLUMES.1964 OTHER THE HANNA MINING CO. - SEE GEN. REFERENCES F1ITEM 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.