Mine Index 10086755 Weiters (F.), Little Corporal Mine

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	S-T-R	15(NESE)-28N-1W
	County:	Jo Daviess
	Quadrangle:	Galena
	District:	Upper Mississippi Valley
	Subdistrict:

Mine Index Number: 10086755

ISGS ID:		MSHA ID:
MAS ID:	170850070	MRDS ID:	W800262
Company Name:	Weiters (F.)
Mine/Site Name:	Little Corporal Mine
Active/Abandoned:	Abandoned
Start Date:	1903	End Date:	1917
Commodity Type:	Metallic
Commodity:	Iron, Lead, Zinc
Minerals Present:	Galena, Dolomite, Calcite, Quartz, Sphalerite, Pyrite
Type of Mine:	Underground
District:	Upper Mississippi Valley	Subdistrict:
County:	Jo Daviess
Section/Township/Range:	15(NESE)-28N-1W
Latitude,Longitude:	42.42307,-90.4695499999998
Unit(s) Mined:	Galena Group, Platteville Group
Feature(s) Mined:
MRDS Link:	https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10086755
Mindat link:

Discussion

SPHALERITE, RATHER THAN GALENA, WAS THE COMMONEST MINERAL AT THE OPENING. THE ORE CONTAINS LITTLE PB, AND IS LOW IN FE, SO THE JIG CONCENTRATES RAN 50-60 PERCENT ZN.

Mine Data/Information

Mine Data

Ore body information

Thickness	3.05M
Width	3.35M
Length	121.92M

THE ORE BODY WAS A TYPICAL EAST-TRENDING GASH-VEIN DEPOSIT, IN WHICH SPHALERITE RATHER THAN GALENA WAS THE COMMONEST MINERAL AT THE OPENING. THE ORE BODY WAS JUST ABOVE THE TOP OF THE PROSSER CHERTY MEMBER OF THE GALENA DOLOMITE.

Workings at the site

Type of workings	Underground
Name of workings	SHAFT
Overall depth	33.53M

References

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

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.

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.

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep_id=10086755
Also referenced as 10231593