Locations of ancient flint quarries in Ohio

From Minerals of Ohio, Carlson, Dr Ernest.

Table showing flint occurrences by Age and Formation and where ancient man quarried the stone.
Note the variation in color and physical characteristics of the flint.

Aborginal Flint quarries in Ohio (Minerals of Ohio, Carlson E, ODNR Bulletin 69 page 15)
System	Group	Formation or Bed	Flint Unit	Occurrence	Quarry Location
					County	Township
Pennsylvanian	Monongahela	Fishpot limestone	Fishpot flint	Nodular flint; light to dark brown, gray with lighter color streaks	Jefferson	Smithfield
					Jefferson	Mt Pleasant
	Conemaugh	Brush Creek limestone	Brush Creek flint	sheets; interbedded with shale; dark gray to black with light gray patches and streaks	Morgan	York
					Perry	Bearfield
					Vinton	Madison
					Athens
					Gallia
					Lawrence
	Allegheny	Vanport limestone	Vanport flint	sheets, lenticular and nodular flint; light colored mottled grayish white or tan, some brightly colored	Licking	Hopewell
					Muskingum	Hopewell
					Muskingum	Licking
			Plum Run flint		Jackson	Milton
					Vinton	Elk
					Mahoning	Smith
					Stark	Lexington
		Zaleski flint	Zaleski flint	Sheets; nodular flint; black or dark gray to black; lacks mottling and banding	Vinton	Elk
					Vinton	Jackson
					Vinton	Madison
					Vinton	Richland
					Jackson
	Pottsville	Upper Mercer limestone	Upper Mercer flint	Sheets, nodules flint; black or dark gray with light gray patches and streaks	Coshocton	Jefferson
					Coshocton	Newcastle
					Hocking	Green
					Muskingum	Falls
					Muskingum	Madison
					Muskingum	Hopewell
					Muskingum	Muskingum
					Perry	Clayton
					Perry	Pike
		Boggs Limestone	Boggs flint	Sheets; bluish black to black or dark gray with buff colored streaks	Muskingum	Falls
Devonian		Delaware Limestone	Delaware chert	Lenticular and nodular chert; tan to dark brown and black; lacks banding	Delaware	(western)
					Franklin	(western)
					Marion	(eastern)
Siluarian		Bisher Dolomite	Bisher Flint	Interbedded flint and dolomite, nodular flint; dark gray with light gray bands	Highland	Liberty
					Adams	(northern)
		Brassfield Formation	Brassfield chert	Lenticular and nodular chert; white, grayish white, or yellow white, with light colored streaks and patches	Adams	(south central)