I found the following articles from the Ohio Mineral Collector on www.vasichkominerals.com.
Site author is Joe Vasichko from Wooster Ohio. Well worth the read.
Ohio Rockhound
Articles for the Ohio Mineral Collector
Collecting Wurtzite Crystals, Negley, Ohio
Mineralization of Geodized Brachiopods,
Georgetown, Ohio
Mineral Habits of the C.E. Duff and
Son Inc. Quarry
Gypsum var. Selenite Crystals from
Ellsworth, Ohio
Septarian Minerals of the Huron River near
Lamereaux Road Bridge, Monroeville, Ohio
Map of Septarian Minerals of the Huron River near Lamereaux Road Bridge, Monroeville, Ohio