Chittenden - Black - Wright

BRADBURY, J.C., G.C. FINGER, AND R.C. MAJOR. FLUORSPAR INILLINOIS. ILL. GEOL. SURV. CIRC. 420, URBANA, IL,1968, P. 13.BROWNING, J.S., W.H. EDDY, AND T.L. EDDY. SELECTIVEFLOTATION OF BARITE-FLUORSPAR ORES FROM KENTUCKY.BUMINES RI 6187, 1963, 15 PP.GROGAN, R.M., AND J.C. BRADBURY. FLUORITE-ZINC-LEADDEPOSITS OF THE ILLINOIS-KENTUCKY MINING DISTRICT.CH. IN ORE DEPOSITS OF THE UNITED STATES, 1933-1967,ED. BY JOHN D. RIDGE. AIME, NEW YORK, V. 1, 1ST ED.,1968, PP. 370-399.HOOK, J.W. STRUCTURE OF THE FAULT SYSTEMS IN THE ILLINOIS-KENTUCKY FLUORSPAR DISTRICT. CH. IN A SYMPOSIUM ON THEGEOLOGY OF FLUORSPAR, ED. BY DONALD W. HUTCHESON.KENTUCKY GEOL. SURV. SPECIAL PUB. 22, LEXINGTON, KY,1974, PP. 77-86.TRACE, R.D. ILLINOIS-KENTUCKY FLUORSPAR DISTRICT. CH. INA SYMPOSIUM ON THE GEOLOGY OF FLUORSPAR, ED. BY DONALDW. HUTCHESON. KENTUCKY GEOL. SURV. SPECIAL PUB. 22,LEXINGTON, KY, 1974, PP. 58-76.