| Reference | {Deposit:: GEOLOGY OF THE FLUORSPAR DEPOSITS OF ILL ILL GEOL SUR BULL 7}{Deposit:: BAXTER J W AND DESBOROUGH G A ILL GEOL SUR CIRC 385 PART 2}{Deposit:: ILLINOIS STATE GEOLOGIC SURVEY BULL 41}{Deposit:: BASTIN EDSON S FLUORSPAR DEPOSITS OF HARDIN AND POPE COUNTIE}{Deposit:: ILL ILL STATE GEOL SUR BULL 58 1931 P 76}{Deposit:: HOLLENBECK, R. P. FLUORSPAR IN THE EASTERN UNITED STATES.}{Deposit:: BUMINES IC 8339, 1967, P. 33.}{Deposit:: PHONE CONVERSATION (PMT) WITH GILL MONTGOMERY, A GEOLOGIST -}{Deposit:: CONSULTANT FOR FLUORSPAR PRODUCERS IN THE ILL. AREA.} |