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University of Illinois Urbana-Champaign

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Showing 1–30 of 225 items
Thumbnail for Illinois fluorspar
Illinois fluorspar
Finger, G.C.; Risser, H.E.; Bradbury, J.C.

Thumbnail for Analyses of some Illinois rocks for gold
Analyses of some Illinois rocks for gold
Bradbury, J.C.; Hester, Norman C.; Ruch, R.R.

Thumbnail for Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District
Mines in the Illinois portion of the Illinois-Kentucky Fluorspar District
Denny, F. Brett; Nelson, W. John; Breeden, Jeremy R.; Lillie, Ross C.

Thumbnail for Bedrock geology of Harrisburg Quadrangle, Saline County, Illinois
Bedrock geology of Harrisburg Quadrangle, Saline County, Illinois
Denny, F. Brett; Jacobsen, Russell J.; Nelson, W. John

Thumbnail for Subsurface geochemical investigation in western and southern Illinois : a pilot study
Subsurface geochemical investigation in western and southern Illinois : a pilot study
Erickson, Ralph Leroy; Erickson, M.S.; Chazin, Barbara; Baxter, James W.; Masters, J.M.; Eidel, J. James