Mine detail: Ludington Mine

Previously called 'BradleyChapin'

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Location

Lat / long:

45.82528, -88.06781

Resource(M)

Primary:	Iron
Ore:	Hematite, Magnetite, Goethite
Gangue:	Quartz
Orebody form:	STRATABOUND
Discovery year:	1849

Production

Operation type:	Underground
Deposit type:	Banded Iron-Rich Sedimentary Deposits
Production size:	Small
Development status:	Past Producer
Production years:	1880-1894. LUDINGTON WAS ABANDONED IN 1931.
First production started:	1880
Last production ended:	1894

Geology

Host rock:	Vulcan Iron Formation
Host type:	Iron Formation
Structure:	Major troughs into which Iron fm. has slumped; regional trends are E-W to N
Alteration processes:	Leaching of silica or replacement by iron oxides or a combination of these processes.

References

MRDS	W062039
DEP	10082689
Reference	{Deposit:: DUTTON, C. E. AND ZIMMER, P. W., 1968, IRON ORE DEPOSITS OF MENOMINEE DISTRICT, MICHIGAN, (IN) ORE DEPOSITS OF THE UNITED STATES, 1933 - 1967: A.I.M.E., THE GRATON-SALES VOLUME, V. 1, P. 538 - 549.}{Deposit:: JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM IN PRECAMBRIAN OF NORTHERN MICHIGAN, G.S.A. BULLETIN, V. 66, P. 1455 - 1488.}{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES: CLEVELAND, OHIO, 2D ED., 334 P.}{Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES.}{Deposit:: VAN HISE AND BAYLEY, 1897: U.S.G.S. MONOGRAPH 28.}{Deposit:: BAYLEY, R.W., AND OTHERS, 1966, GEOLOGY OF THE MENOMINEE IRON-BEARING DISTRICT, MICHIGAN AND WISCONSIN: U.S.G.S. PROFESSIONAL PAPER 513, 96 P. VAN HISE, C.E.., AND LEITH, C.E.., 1911, THE GEOLOGY OF THE LAKE SUPERIOR REGION: U.S.G.S MONOGRAPH 52, 641 P.}{Production:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P. 107-128.}
Reporter	Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T.