Mine Index 10106432 Baldwin Prospect

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	S-T-R	27(SWSENE)-11S-7E
	County:	Pope
	Quadrangle:	Herod
	District:	Fluorspar District
	Subdistrict:	Empire Subdistrict

Mine Index Number: 10106432

ISGS ID:		MSHA ID:
MAS ID:	171510034	MRDS ID:	W062549
Company Name:
Mine/Site Name:	Baldwin Prospect
Active/Abandoned:	Abandoned
Start Date:	circa 1973	End Date:	Unknown
Commodity Type:	Metallic, Non-Metallic
Commodity:	Fluorspar, Zinc
Minerals Present:	Galena, Calcite, Fluorite, Sphalerite
Type of Mine:	Surface, Underground
District:	Fluorspar District	Subdistrict:	Empire Subdistrict
County:	Pope
Section/Township/Range:	27(SWSENE)-11S-7E
Latitude,Longitude:	37.53479,-88.41865
Unit(s) Mined:	Upper 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=10106432
Mindat link:

Discussion

Faulting present.

Alteration: (Local) Weathering Of Limestone To Form A Gravel Spar Deposit.

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

SPECIMENS FROM THE DUMP REVEAL THAT SPHALERITE AND FLUORITE HAVE REPLACED FRACTURED LIMESTONE IN THE WALLS. THE DEPOSIT VARIED FROM 0 TO 20 FT IN WIDTH AND WAD ABOUT 100 FT LONG. THE DEPOSIT TRENDS N 65 E.

Overall depth 15.24M

A SMALL PIT EXPOSES A SMALL VEIN THAT STRIKES N 50 E AND DIPS 70 SE. A SHAFT ABOUT 50 FT DEEP WAS SUNK ON ONE SIDE OF THE VEIN.

THIS IS A GRAVEL SPAR DEPOSIT.

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.

WELLER J M ET AL ILL STATE GEOL SUR BULL 76 P 136

BASTON EDSON S ILL STATE GEOL SUR BULL 58 1931 P 88

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10106432 Also referenced as 10120599