Cedarville-Guelph Chert

L-513 (Cedarville-Guelph Chert): Not a collection from archaeological context. Unknown collection procedure. Collection includes raw material, outer surface, and naturally-weathered specimens.

L-513 (Cedarville-Guelph Chert)

Cedarville-Guelph Chert, also known as Logan County, Logan County Flint, and Shawnee, as an off-white to dark gray chert. When weathered it becomes off-white, yellow, tan, brown, gray, blue-gray, pink, or red. Possibly the same colors as weathered specimens when heat-treated. There are trace amounts of pyrite, chalcedony, and euhedral (a crystal completely bounded by its own regualarly developed crystal faces). It has a vitreous to earthy texture. Deposits include nodular in lenticular layers, interbedded with light gray, and medium-grained fossiliferous dolomite.

Geology remarks: Epoch- Silurian, Series-Middle, Group- Niagara, Form- Cedarville-Guelph

Location remarks: Dolomite quarry 1.75 miles west of Jamestown on headwaters of Caesar Creek, south of the old Myers School in northwestern part of Silver Creek Township, Green County, OH; Herzog Lime and Stone Company are located at McVitty, 1.6 miles southwest of the Big Four Railroad, in southwestern part of the southwest quarter of Section 19, Jackson Township, Hardin County, OH; Outcrop, section 28, Dixon Township, Preble County, OH.

Archaeology remarks: Paleoindian to Mississippian, Raisch-Smith site; Archaic, Hershman and Foust sites; PaleoCrossing site, Medina Co., OH

22 Nov 2019

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