Mine Index 10106415 Defender Mine

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	S-T-R	34(SWSE)-11S-9E
	County:	Hardin
	Quadrangle:	Saline Mines
	District:	Fluorspar District
	Subdistrict:	Cave-in-Rock Subdistrict

Mine Index Number: 10106415

ISGS ID:		MSHA ID:
MAS ID:	170690011	MRDS ID:	W062447
Company Name:
Mine/Site Name:	Defender Mine
Active/Abandoned:	Abandoned
Start Date:	Unknown	End Date:	circa1923
Commodity Type:	Non-Metallic
Commodity:	Fluorspar
Minerals Present:	Calcite, Fluorite, Quartz
Type of Mine:	Underground
District:	Fluorspar District	Subdistrict:	Cave-in-Rock Subdistrict
County:	Hardin
Section/Township/Range:	34(SWSE)-11S-9E
Latitude,Longitude:	37.51118,-88.1992
Unit(s) Mined:	Upper Valmeyeran Series, Aux Vases Sandstone, Rosiclare Sandstone, Ste. Genevieve Limestone, Fredonia Limestone, St. Louis Limestone
Feature(s) Mined:
MRDS Link:	https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10106415
Mindat link:

Discussion

THE ROOF ROCK IS ROSICLARE SANDSTONE AND IT BASAL SHALE AND THE ROCK BENEATH THE ORE IS FREDONIA LIMESTONE.

Ore body information: BLANKET

Year of Last Production: 1923

THERE ARE TWO ZONES OF BANDED ORE. REPLACEMENT IS NEARLY COMPLETE IN THE UPPER ZONE, AS THE FINE-GRAINED BANDS CONSIST LARGELY OF FLUORITE WITH A LITTLE QUARTZ AND VERY LITTLE CALCITE, WHEREAS IN THE LOWER ZONE THE FINE-GRAINED BANDS CONTAIN ABUNDANT CALCITE.

Mine Data/Information

These files may not be true to scale and are not georgistered.	Mine Index:	10106415
	Company:	Minerva Oil Company
	Mine Name:
	More Info:	CaveInRock MIN PropertyDrillHole.jpg
	Click to download Full ResolutionThese files are true to scale and most are georegistered for gis software. File Type: Map Caption: Cave In Rock District Minerva Oil Company Date: 01/31/1964

These files may not be true to scale and are not georgistered.	Mine Index:	10106415
	Company:
	Mine Name:
	More Info:	CaveInRockFluorsparDistrict OZM.jpg
	Click to download Full ResolutionThese files are true to scale and most are georegistered for gis software. File Type: Map Caption: Ozark-Mahoning Company Map of Cave-In-Rock district

These files may not be true to scale and are not georgistered.	Mine Index:	10106415
	Company:	Mahoning Mining Company
	Mine Name:
	More Info:	CaveInRockPlanDrillOriginal.jpg
	Click to download Full ResolutionThese files are true to scale and most are georegistered for gis software. File Type: Map Caption: Mahoning Ming Company Map of Cave-in-Rock Fluorspar District

These files may not be true to scale and are not georgistered.	Mine Index:	10106415
	Company:
	Mine Name:
	More Info:	HardinCounty OZM GeoDrillMap.jpg
	Click to download Full ResolutionThese files are true to scale and most are georegistered for gis software. File Type: Map Caption: Map showing Stratigraphic Position of Mineralized rocks in Mines and test borings. Mahoning Mining Company Property and vicinity. (ISGS Map) Credit: Illinois State Geological Survey Date: 1945

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.

CURRIER L W GEOLOGY OF THE CAVE IN ROCK DISTRICT USGS BULL 9

BASTIN EDSON S THE FLUORSPAR DEPOSITS OF HARDIN AND POPE COUNTIES

ILL ILL GEOL SURVEY BULL 58 1931 P 91

External Links

Mineral Resources Data System (MRDS) USGS Link
https://mrdata.usgs.gov/mrds/show-mrds.php?dep id=10106415 Also referenced as 10144992