"St. Louis Green" chert, from middle part of St. Louis Formation in Estill and Powell counties. Used for lapidary and by Indians for hammer stones.
Paoli chert, laminated- to banded-character, from Rowan and Carter counties.
Haney chert, different shades of gray with an oolitic texture, from Carter to Powell counties in eastern Kentucky and Breckinridge and Hart counties in western Kentucky. Used for lapidary.
Flint Ridge Flint, black, from Breathitt and Perry counties in eastern Kentucky. Used by Indians for flint knapping.
