Mine Index 10105533 Hillside Fluorspar Mining Company, Lee Fluorspar Mines

Mine Index Number: 10105533

ISGS ID:		MSHA ID:
MAS ID:		MRDS ID:	W006920
Company Name:	Hillside Fluorspar Mining Company
Mine/Site Name:	Lee Fluorspar Mines
Active/Abandoned:	Abandoned
Start Date:	Unknown	End Date:	Unknown
Commodity Type:	Non-Metallic
Commodity:	Fluorspar
Minerals Present:	Fluorite
Type of Mine:	Underground
District:	Fluorspar District	Subdistrict:	Karbers Ridge Subdistrict
County:	Hardin
Section/Township/Range:	14-11S-8E
Latitude,Longitude:	37.56674,-88.3000399999998
Unit(s) Mined:	Upper Valmeyeran Series, Aux Vases Sandstone, Ste. Genevieve Limestone, St. Louis Sandstone
Feature(s) Mined:	Hicks_Dome, Rock_Creek_Graben, Lee_Fault_Zone
MRDS Link:	https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10105533
Mindat link:

Host and associated rocks
Host or associated	Associated
Rock type	Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
Rock unit name	Mafic Dikes And Breccias
Rock description	Mafic Dikes And Breccias
Stratigraphic age (youngest)	Early Permian
Stratigraphic age (youngest)	Mississippian
Stratigraphic age (youngest)	Mississippian
Host or associated	Host
Rock type	Sedimentary Rock > Carbonate > Limestone
Rock unit name	Limestones
Rock description	Limestones

Regional geologic structures: New Madrio Fault Zone, 38th Parallel Lineament

Controls for ore placement: Lee Fault -Trends Ne, Downthrown Side Se, Displacement 137 M. At Lee Mine. (Baxter, 1965 P. 32)

BAXTER, J. W., DESBOROUGH, G. A., 1965 AREAL GEOLOGY OF THE ILLINOIS FLUORSPAR DISTRICT PART 2: ILL. STATE GEOLOGICAL SURVEY CIRC. 385, 40 P.

WELLER, J. M., GROGAN, R. M. ANDTIPPIE, F. E., 1952, GEOLOGY OF THE FLUORSPAR DEPOSITS OF ILLINOIS: ILL. STATE GEOL. SURV. BULL. 76

MC GINNIS, L.D. AND BRADBURY, J.C., 1964, AEROMAGNETIC STUDY OF THE HARDIN COUNTY AREA, ILLINOIS: ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 363, 12 P.