Illinois · Hardin County
Past Producer

Defender Mine

Hardin County, Illinois, United States
Fluorine-Fluorite
⌖ Show on mapUSGS source ↗
Commodities
PrimaryFluorine-Fluorite
Commodity typeN
Deposit
Deposit sizeY
WorkingsUnderground
Orebody formBALNKET
Materials
Ore mineralsFluorite
GangueCalcite, Quartz
Geology
Host rockLimestone · Fredonia Limestone
Associated rockSandstone · Rosiclare Sandstone
Economic & production
Development statusPast Producer
Last production1923
Identification
Deposit ID10106415
MRDS IDW062447
RegionNA
Data scoreC
Coordinates37.51118, -88.1992
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.