Mine detail: Steward Mine (Orleans)

Previously called 'OrleansStewart'

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Location

Lat / long:

46.53611, -88.15726

Resource(M)

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

Production

Operation type:	Underground
Deposit type:	Secondary Enrichment
Production size:	Small
Development status:	Past Producer
First production started:	1874
Last production ended:	1878

Geology

Host rock:	Negaunee Iron-Formation
Host type:	Iron Formation
Alteration processes:	Chert replaced by compact or specular hematite and magnetite

References

MRDS	W028536
DEP	10106103
Reference	{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1938 , LAKE SUPERIOR IRON ORES ( 1ST ED. ): CLEVELAND, OHIO, P. 120 .}{Deposit:: SECTION FILES, MICHIGAN GEOLOGICAL SURVEY, CLEVELAND-CLIFFS IRON CO., 1950 , STEWARD MINE EXPLORATION, SECTION FILES OF THE GEOLOGICAL SURVEY DIVISION OF MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}{Deposit:: JOHNSON, A, 1998, INVENTORY OF UNDERGROUND MINES, BARAGA COUNTY, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.}
Reporter	Yeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)