Mine Index 10082974 Crown Fluorspar Corporation/Rosiclare Lead Fluorspar Company, Dubois Mine

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	S-T-R	19(NESWSW)-12S-8E
	County:	Hardin
	Quadrangle:	Rosiclare
	District:	Fluorspar District
	Subdistrict:	Interstate Subdistrict

Mine Index Number: 10082974

ISGS ID:		MSHA ID:
MAS ID:	170690013	MRDS ID:	W062451
Company Name:	Crown Fluorspar Corporation, Rosiclare Lead Fluorspar Company
Mine/Site Name:	Dubois Mine
Active/Abandoned:	Abandoned
Start Date:	circa 1973	End Date:	Unknown
Commodity Type:	Non-Metallic
Commodity:	Fluorspar
Minerals Present:	Fluorite
Type of Mine:	Underground
District:	Fluorspar District	Subdistrict:	Interstate Subdistrict
County:	Hardin
Section/Township/Range:	19(NESWSW)-12S-8E
Latitude,Longitude:	37.4542399999998,-88.3733699999998
Unit(s) Mined:	Upper Chesterian Series, Grove Church Shale, Tar Springs Sandstone
Feature(s) Mined:	Illinois_Furnace_Fault
MRDS Link:	https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10082974
Mindat link:

Discussion

NO GALENA OR SPHALERITE WERE REPORTED.

THE DEPOSITS IS ON ILLINOIS FURNACE FAULT AND ASSOCIATED SUB-PARALLEL FAULTS. THE FAULT TRENDS N 60-65 E AND IS NEARLY VERTICAL.

MINOR INTERMITTENT COMMERCIAL PRODUCTION.

Overall depth 30.48M

Year of First Production: 1904

References

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.

WELLER, J.M., GROGAN, R.M., AND TIPPIE, F.E., 1952, GEOLOGY OF THE FLUORSPAR DEPOSITS OF ILLINOIS: ILLINOIS STATE GEOLOGICAL SURVEY BULLETIN 76, 147 P.

WELLER AND OTHERS, 1952, P. 145.

SWANSON ARTHUR S INVESTIGATION OF THE DUBOIS FLUORITE PROPER

HARDIN CO ILL US BU MINES RI 4315 1948

WELLER M J GEOLOGY OF THE FLUORSPAR DEPOSITS OF ILL ILL STAT

GEOL SURVEY BULL 76 P 45

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10082974 Also referenced as 10120575