Circular 604

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Mines in the Illinois Portion of the Illinois-Kentucky Fluorspar District

F. Brett Denny,1 W. John Nelson,1 Jeremy R. Breeden,1 and Ross C. Lillie2 1Illinois State Geological Survey, Prairie Research Institute, University of Illinois, Champaign,Illinois 2North Star Minerals, Traverse City, Michigan

Circular 604 2020

Suggested citation: Denny, F.B., W.J. Nelson, J.R. Breeden, and R.C. Lillie, 2020, Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District: Illinois State Geological Survey, Circular 604, 73 p. and map.

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