Flint Ridge Chalcedony

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Class Natural Material
Type Stone

Other Names

Flint Ridge

Similar Materials



  • Milky blue, "often tinted with shades of pink, yellow or even blue"(Converse 2007:188)
  • Opalescent with an exceptionally high silica content


Geologic Context

Vanport Member, Allegheny Formation, Pennsylvanian System (inferred from Converse (2007:186))



  • The primary exposures of Flint Ridge Chert are located along a plateau "between Newark, Ohio, in Licking County and Zanesville, Ohio, in Muskingum County"(Converse 2007:186)
  • Deposits are as much as 12 feet in thickness (Converse 2007:186)


Map of Source Locations and Relevant Sites

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Red Dot: Source of Flint Ridge Chalcedony; Green Dot: Site assemblage that contains Flint Ridge Chalcedony
Note: In the interest of protecting our shared cultural heritage from those who would do it harm, intentional or otherwise, only approximate site locations are provided here.

Archaeological Contexts

Technological Notes

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