Mine detail: Big Four Group Fluorspar Mines

Previously called 'Larue Fault System'

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Location

Lat / long:

37.35007, -88.20003

Resource(B)

Primary:	Fluorine-Fluorite, Zinc, Lead
Ore:	Anglesite, Galena, Pyromorphite, Smithsonite, Sphalerite
Gangue:	Calcite, Marcasite, Quartz
Orebody form:	LINEAR

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Past Producer
First production started:	1874

Geology

Host rock:	Chester And Valmeyeran Series L.S., Shale, S.S
Host type:	Sandstone,Limestone
Structure:	New Madrid Fault Zone, 38th Parallel Lineament., Commodore Fault Bounds Big Four System On Ne End; Crystal - Holly Fault System Is On The Nw.
Alteration processes:	Silicification Of Wallrock

References

MRDS	W006912
DEP	10069397
Reference	{Deposit:: HARDIN, G.C., JR., AND TRACE, R.D., 1959, GEOLOGY AND FLUORSPAR DEPOSITS, BIG FOUR FAULT SYSTEM, CRITTENDEN CO., KY.: USGS BULL. 1042S}{Deposit:: TRACE, R.D., 1974, ILLINOIS-KENTUCKY FLUORSPAR DISTRICT, IN - A SYMPOSIUM ON THE GEOLOGY OF FLUORSPAR: KENTUCKY GEOLOGICAL SURVEY SPECIAL PUB. 22 P. 58 - 76}{Deposit:: 1944 GEOLMAP HARDIN, G.C., JR. ET AL}{Deposit:: TRACE, R.D., 1962, GEOLOGY OF THE SALEM QUADRANGLE, KENTUCKY: USGS GEOL. QUAD MAP GQ-206}{Deposit:: 1962 GEOLMAP TRACE, R.D.}{Production:: HARDIN, G.C., JR., AND TRACE, R.D., 1959, USGS BULL. 1042S.}
Reporter	Schruben, Paul G.