Worthington area, Franklin Co., Ohio, USA
Barth, V. D., 1975, Formation of concretions occurring in the Ohio shales along the Olentangy River: Ohio Journal of Science, v. 75, no. 3, p. 162-163.
Carlson, E. H., 1991, Minerals of Ohio: Ohio Division of Geological Survey Bulletin 69, 155 p. (concretions discussed on p. 17-24).
Clifton, H. E., 1957, The carbonate concretions of the Ohio Shale: Ohio Journal of Science, v. 57, no. 2, p. 114-124.
Criss, R. E., Cooke, G. A., and Day, S. D., 1988, An organic origin for the carbonate concretions of the Ohio Shale: U.S. Geological Survey Bulletin 1836, 21 p.
Feldmann, R. M., and McKenzie, Scott, 1981, Echinocaris multispinosis, a new echinocarid (Phyllocarida) from the Chagrin Formation (Late Devonian) of Ohio: Journal of Paleontology, v. 55, no. 2, p. 383-388.
Hansen, M. C., 1994, Concretions: the ludus helmontii of the Ohio Shale: Ohio Geology, Fall 1994, p. 1, 3-6.
| Baryte|| Calcite|| Pyrite|
3 entries listed. 3 valid minerals.
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Locality Updated: All Nations mine, Moina District (Middlesex District), Tasmania, AustraliaFrom Ralph Bottrill, 25th Apr 2014 02:12:10