10082963

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	S-T-R	21(SWSW)-12S-8E
	County:	Hardin
	Quadrangle:	Rosiclare
	District:	Fluorspar District
	Subdistrict:	Rosiclare Subdistrict

Mine Index Number: 10082963

ISGS ID:		MSHA ID:
MAS ID:	170690010	MRDS ID:	W062435
Company Name:	Rosiclare Lead And Fluorspar Mining Company
Mine/Site Name:	Clement, Clement-Dyspeck, Dyspeck Prospect
Active/Abandoned:	Abandoned
Start Date:	circa 1973	End Date:	Unknown
Commodity Type:	Non-Metallic
Commodity:	Fluorspar
Minerals Present:	Calcite, Fluorite, Fluorine
Type of Mine:	Surface, Underground
District:	Fluorspar District	Subdistrict:	Rosiclare Subdistrict
County:	Hardin
Section/Township/Range:	21(SWSW)-12S-8E
Latitude,Longitude:	37.45201,-88.3367099999998
Unit(s) Mined:	Valmeyeran Series, Aux Vases Sandstone, Ste. Genevieve Limestone, St. Louis Sandstone
Feature(s) Mined:
MRDS Link:	https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10082963
Mindat link:

Discussion

The Clement Mine, also called the Clement-Dyspeck Prospects, was operated by the Rosiclare Lead and Fluorspar Company. The prospects were located northeast of Illinois Route 34 about 2 miles north of Rosiclare (Bastin 1931). A.H. Worthen described a prospect called the McAllen Diggings, present around 1860, in the general vicinity of the Clement Mine (Weller et al. 1952). These pits constitute the northern prospects along the Rosiclare-Hillside Fault Zone (Bastin 1931). Several small pits were developed and at least one shaft was sunk to 40 feet deep (Bastin 1931). By 1928, this mine had produced 1,600 tons of finished spar from a vein 4 feet wide (Bastin 1931). The vein trended N45°–50°E and the dip was nearly vertical (Bastin 1931). Gravel spar was also reported as being mined in this area. Bain (1905) indicated that other prospects were located farther to the northeast, but little documentation of these prospects could be obtained.

The locations of these prospects are also depicted on a geologic map produced by Weller et al. (1952). Weller et al. mapped two shafts labeled Stewart, which were located between the Dyspeck property and the Eureka No. 1 Mine. Very little information is available concerning this prospect, and the Stewart Mine present in the Rosiclare Subdistrict should not be confused with the Stewart Subdistrict several miles to the west.

Mine Data

NO GALENA OR SPHALERITE WERE REPORTED.

THE EXPOSED VEIN STRIKES N 45-50 E AND IS NEARLY VERTICAL.

A LINEAR SERIES OF SHALLOW WORKINGS. THE PROSPECT IS ON THE ROSICLARE-HILLSIDE VEIN SYSTEM. THERE ARE SEVERAL SMALL OPEN PITS AND A SHALLOW SHAFT. THE SHAFT EXPOSES 4 FT OF VEIN MATERIAL CONSISTIN OF NARROW VEINLETS OF FLOURITE IN IRON-STAINED CLAYEY MATERIAL.

BOTH VEIN AND GRAVEL SPAR FLUORITE WERE PRESENT.

Production: 1904 to 1942

Mineral occurrence model information
Model code	174
USGS model code	26b
Deposit model name	Fluorspar deposits (fluorite veins)

Geologic structures
Type of structure	Local
Structure description	Probably Eureka Vein

Controls for ore emplacement
Faulting, Brecciation

Workings at the site
Type of workings	Surface/Underground
Name of workings	SHAFT
Overall depth	12.19M

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.

BASTIN, E.S., 1931, THE FLUORSPAR DEPOSITS OF HARDIN AND POPE COUNTIES, ILLINOIS: ILLINOIS STATE GEOLOGICAL SURVEY BULLETIN 58, 116 P.

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.

ILL STATE GEOLOGIC SURVEY BULL 41

BASTIN EDSON S THE FLUORSPAR DEPOSITS OF HARDIN AND POPE COS

ILL ILL GEOL SURVEY BULL 58 1931

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10082963 Also referenced as 10266420