Mine Index 10086254 Kean (N.M.), Northwestern Mine

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	S-T-R	22(E1/2NWNW)-29N-1E
	County:	Jo Daviess
	Quadrangle:	Galena
	District:
	Subdistrict:

Mine Index Number: 10086254

ISGS ID:		MSHA ID:
MAS ID:		MRDS ID:	W800126
Company Name:	Kean (N.M.)
Mine/Site Name:	Northwestern Mine
Active/Abandoned:	Abandoned
Start Date:	1904	End Date:	after1913
Commodity Type:	Metallic
Commodity:	Lead, Zinc
Minerals Present:	Galena, Dolomite, Calcite, Quartz, Sphalerite, Pyrite
Type of Mine:	Underground
District:		Subdistrict:
County:	Jo Daviess
Section/Township/Range:	22(E1/2NWNW)-29N-1E
Latitude,Longitude:	42.49862,-90.39678
Unit(s) Mined:	Galena Group, Platteville Group
Feature(s) Mined:
MRDS Link:	https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10086254
Mindat link:

Discussion

ORE IS MAINLY SPHALERITE WITH CONSIDERABLE GALENA AND A RELATIVELY SMALL AMOUNTOF IRON SULFIDES.

Mine Data

Workings at the Site

Type of workings	Underground
Name of workings	SHAFT
Overall depth	36.88M
Overall length	121.92M
Overall width	182.88M
Type of workings	Underground
Name of workings	SHAFT
Overall depth	28.04M

IN SPRING OF 1904, A 92-FT SHAFT WAS SUNK INTO THE GUTTENBERG MEMBER OF THE DECORAH FM AT THE EAST END OF THE NORTH LIMB OF THE ORE BODY. THIS SHAFT WAS ABANDONED IN 1907. ABOUT 200 FT S, A NEW 121 FT DEEP SHAFT WAS SUNK. THE ORE BODY IS 10 TO 15 FT THICK.

ECON.COM: THE MINE HAD A WELL-EQUIPPED JIG MILL. TEH MINE MAY NOT HAVE BEEN ADEQUATELY EXPLORED.

References

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.

COX, G.H., 1914, LEAD AND ZINC DEPOSITS OF NORTHWESTERN ILLINOIS: ILLINOIS GEOLOGICAL SURVEY BULLETIN 21, 120 P.

BAIN, H.F., 1905, ZINC AND LEAD DEPOSITS OF NORTHWESTERN ILLINOIS: U.S. GEOLOGICAL SURVEY BULLETIN 246, 56 P.

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.

HEYL AND OTHERS, 1959, P. 184.

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep_id=10086254 May be the same as 10144890