Mine detail: Oldenburg Mine

Previously called 'Sometimes Spelled Oldenberg'

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Location

Lat / long:

42.45307, -90.44344

Resource(M)

Primary:	Zinc
Tertiary:	Lead
Ore:	Sphalerite
Gangue:	Calcite, Dolomite, Marcasite, Pyrite, Quartz
Orebody form:	SHEETED

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Unknown
Production years:	OPERATED AT INTERVALS FROM 1870 TO 1907.
First production started:	1870
Last production ended:	1907

Geology

Host rock:	Prosser Cherty Member
Host type:	Dolomite
Structure:	Southeast Of Wisconsin Dome And On The Gentle West Limb Of Wisconsin Arch. To The South Is Illinois Basin And To The West And Southwest Is Forest City Basin. A Few Minles South O Fthe Zinc-Lead District Is Westward-Trending Savanna-Sabula Anticline. Regional Strike Is N 85 W And The Dip Is South.
Tectonic:	Stable Sedimentary Platform Having Later Mild Regional Deformation Sufficient To Produce Major And Minor Folds, Faults, Fracture Zones, And Joints.
Alteration processes:	Leaching, Silicification, Dolomitization

References

MRDS	W800198
DEP	10086313
Reference	{Deposit:: HEYL, A.V., AGNEW, A.F., LYONS, E.J., AND BEHRE, C.H., JR., 1959, THE GEOLOGY OF THE UPPER MISSISSIPPI VALLEY ZINC-LEAD DISTRICT: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 309, 310 P.}{Deposit:: GRANT, 1903, P. 73.}{Deposit:: WILLMAN, H.B., REYNOLDS, R.R., AND HERBERT, PAUL, JR., 1946, GEOLOGICAL ASPECTS OF PROSPECTING AND AREAS FOR PROSPECTING IN THE ZINC-LEAD DISTRICT OF NORTHWESTERN ILLINOIS: ILLINOIS GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS, NO. 116, 48 P.}
Reporter	Mason Jr., G.T., Hedgman, Cheryl (Cannon, W.), Sutphin, David M.