National Geologic Map Database
General Information
- Title: Mineralogical and geochemical analysis of the metal- and organic-rich Grassy Creek Shale of the New Albany Group (Upper Devonian and Lower Mississippian) in Hardin County, southern Illinois
- Author(s): Desborough, G.A.
- Publishing Organization: U.S. Geological Survey
- Series and Number: Bulletin 1989-C [p. C1-C10]
- Larger Work: Day, W.C., and Lane, D.E., eds., Strategic and critical minerals in the Midcontinent region, United States
- Publication Date: 1992
- Map Scale: 1:380,537
- Cross Section: None
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