Pipe Creek

Outcrops occur in Erie County, Ohio. Pipe Creek is typically brown to blue gray opaque stone, with tints of green-yellow patina with aging. It contains fossil horn corals, sponges and others leaving cavaties and quartz inclusions. Texture is waxy to semi-porcelaneous. This chert was not widely used in the early Paleo times, as the glaciers were receeding during that period.

 References

 Prehistoric Chert types of the Midwest, by T. DeRegnaucourt and J. Georgiady. Ohio. Pub. 1998, and Converse Robert, Ohio Flint Types, 1994