Mine detail: Blackjack Mine

Previously called 'Black Jack MineMarsden Black Jack MineMarsden LodePeru Mine'

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Location

Lat / long:

42.3664, -90.40511

Resource(M)

Primary:	Zinc, Lead
Ore:	Galena, Sphalerite
Gangue:	Calcite, Clay, Dolomite, Marcasite
Discovery year:	1854

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Past Producer
Production years:	1854-60 OPERATED AS A LEAD MINE; AND AS A ZINC MINE UNTIL 1883. REOPENED IN 1907 BUT CLOSED IN 1908. NEW JERSEY ZINC OPENED IT IN 1913 AND OPERATED IT ON A LARGE SCALE UNTIL 1 MAR 1927.
First production started:	1854
Last production ended:	1952

Geology

Host rock:	Decorah;Galena
Host type:	Limestone,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	W062756
DEP	10106444
Reference	{Deposit:: U.S. BUREAU OF MINES, 1995, SPATIAL DATA EXTRACTED FROM THE MINERALS AVAILABILITY SYSTEM/MINERAL INDUSTRY LOCATION SYSTEM (MAS/MILS): U.S. BUREAU OF MINES SPECIAL PUBLICATION 12-95.}{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:: BAIN, H.F., 1905, ZINC AND LEAD DEPOSITS OF NORTHWESTERN ILLINOIS: U.S. GEOLOGICAL SURVEY BULLETIN 246, 56 P.}{Deposit:: COX, G.H., 1914, LEAD AND ZINC DEPOSITS OF NORTHWESTERN ILLINOIS: ILLINOIS GEOLOGICAL SURVEY BULLETIN 21, 120 P.}{Deposit:: CHAMBERLIN, 1882, P. 477-478.}{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.}{Production:: HEYL AND OTHERS, 1959, P. 178; WILLMAN AND OTHERS, 1946, P. 33.}
Reporter	Sutphin, David M., Mason Jr., G.T.