| Reference | {Deposit:: 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.}{Deposit:: 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.}{Deposit:: BASTIN, E.S., 1931, THE FLUORSPAR DEPOSITS OF HARDIN AND POPE COUNTIES, ILLINOIS: ILLINOIS STATE GEOLOGICAL SURVEY BULLETIN 58, 116 P.}{Production:: BASTIN, 1931, P. 92.} |