| Reference | {Deposit:: BAXTER, J. W., DESBOROUGH, G. A. AND SHAW, C. W., 1967, AREAL GEOLOGY OF THE ILLINOIS FLUORSPAR DISTRICT, PART 3: ILL. STATE GEOL. SURV. 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:: 1942 GEOLMAP ILL. STATE GEOLOGICAL SURVEY, J. M. WELLER}{Deposit:: MC GINNIS, L. D. AND BRADBURY, J. C., 1964, AEROMAGNETIC STUDY OF THE HARDIN COUNTY AREA, ILLINOIS: ILL. STATE GEOLOGICAL SURVEY CIRC. 363, 12 P.}{Deposit:: 1961 GEOLMAP ILL. STATE GEOLOGICAL SURVEY, G. A. DESBOROUGH}{Deposit:: 1964 GEOPHYS ILL. STATE GEOLOGICAL SURVEY; AEROMAG. SURVEY} |