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Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk
Geology And Mineralization Of The Jefferson Mine, Hardin County, Illinois, Robert Joe Cronk
Masters Theses
"Purpose of the Investigation: The geology of the Jefferson Mine was mapped to determine the relationship of the two fluorspar veins exposed on the 260-foot level to the single vein on the 200-foot level to study the mineralogy and paragenesis of the ore, and to gain any other information that would lead to a better understanding of the fluorspar deposits"--Introduction, page 1.