Mine detail: Erie Mine

Previously called 'Freemont'

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Location

Lat / long:

46.4475, -88.06559

Resource(M)

Primary:	Iron
Gangue:	Quartz, Chert, Mica, Garnet, Actinolite

Production

Operation type:	Underground
Deposit type:	Secondary Enrichment
Production size:	Small
Development status:	Past Producer
First production started:	1876
Last production ended:	1883

Geology

Host type:	Iron Formation
Alteration processes:	Chert to hematite or magnetite in oxidation zones.

References

MRDS	W028532
DEP	10079313
Reference	{Deposit:: SECTION FILES, MICHIGAN GEOLOGICAL SURVEY, REPUBLIC STEEL CO., 1949 ; CLEVELAND - CLIFFS IRON CO., 1965 ; SECTION FILES OF GEOLOGICAL SURVEY DIVISION OF MICHIGAN DEPT. OF NATURAL RESOURCES, LANSING, MICHIGAN.}{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1938 , LAKE SUPERIOR IRON ORES ( 1ST ED. ): CLEVELAND, OHIO, P. 106 .}{Deposit:: KLASNER, J. S., AND CANNON, W. F., 1976 , GEOLOGIC MAP AND GEOPHYSICAL INTERPRETATION OF THE WITCH LAKE QUADRANGLE, MARQUETTE, IRON AND BARAGA COUNTIES, MICHIGAN: US GEOLOGICAL SURVEY, MISCELLANEOUS INVESTIGATIONS SERIES, MAP I-987 .}
Reporter	Yeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T.