| Reference | {Deposit:: BAXTER, J.W., DESBOROUGH, G.A., AND SHAW, C.W., 1967, AREAL GEOLOGY OF THE ILLINOIS FLUORSPAR DISTRICT PART 3: ILL. STATE GEOLOGICAL SURVEY CIRC. 413, 41 P.}{Deposit:: WELLER, J.M., GROGAN, R.M., AND TIPPIE, F.E., 1952, GEOLOGY OF THE FLUORSPAR DEPOSITS OF ILLINOIS: ILL. STATE GEOLOGICAL SURVEY BULL. 76, 147 P.}{Deposit:: MCGINNIS, L.D., AND BRADBURY, J.C., 1964, AEROMAGNETIC STUDY OF THE HARDIN COUNTY AREA, ILLINOIS: ILLINOIS STATE GEOLOGICAL SURVEY CIRCULAR 363, 12 P.}{Deposit:: 1942 GEOLMAP ILL. STATE GEOLOGICAL SURVEY, J.M. WELLER}{Deposit:: 1961 GEOLMAP ILL. STATE GEOLOGICAL SURVEY, G.A. DESBOROUGH}{Deposit:: 1964 GEOPHYS ILL. STATE GEOLOGICAL SURVEY; AEROMAG. SURVEY}{Production:: U.S. BU MINES MINERAL YEARBOOK, 1960} |