Mine Index 10083036 Tower Rock Mine, Iron Hill

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	S-T-R	17(SESWSE)-12S-9E
	County:	Hardin
	Quadrangle:	Cave In Rock
	District:	Fluorspar District
	Subdistrict:	Cave-in-Rock Subdistrict

Mine Index Number: 10083036

ISGS ID:		MSHA ID:
MAS ID:	170690098	MRDS ID:	W062527
Company Name:
Mine/Site Name:	Tower Rock Mine, Iron Hill
Active/Abandoned:	Abandoned
Start Date:	circa 1973	End Date:	Unknown
Commodity Type:	Non-Metallic
Commodity:	Fluorspar
Minerals Present:	Galena, Fluorite
Type of Mine:	Surface, Underground
District:	Fluorspar District	Subdistrict:	Cave-in-Rock Subdistrict
County:	Hardin
Section/Township/Range:	17(SESWSE)-12S-9E
Latitude,Longitude:	37.4678499999998,-88.23281
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=10083036
Mindat link:

Discussion

GALENA WAS A MINOR MNERAL.

Controls for ore placement: Selective Replacement Of Limestone Beds.

THE VEIN ORE BODY N 35 E. FLUORSPAR IS REPORTED TO BE MOSTLY IN NARROW VEINLETS I A SILICIFIED FAULT ZONE.

SMALL PRODUCTION.

Overall depth 36.58M

BEDDED FLUORITE DEPOSITS FORM PRIMARILY FROM SELECTIVE REPLACEMENT OF LIMESTONE BEDS. REPLACEMENT, VEIN, AND GRAVEL SPAR WERE REPORTED BY WELLER AND OTHERS (1952).

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.

BAXTER, J.W., POTTER, E.P., AND DOYLE, F.L., 1963, AREAL GEOLOGY OF THE ILLINOIS FLUORSPAR DISTRICT, PART 1-- SALINE MINES, CAVE I ROCK, DEKOVEN, AND REPTON QUADRANGLES; ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 342, 43 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 130 146

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10083036 Also referenced as 10193809