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Muldraugh aka Fort Payne Chert, aka, Floyds Knobs or Knobs.
Kentucky, Indiana also Tennessee and Alabama
Crawford, Floyd and Harrison counties in south central Indiana and Jefferson and Knox counties in Kentucky
Mostly light grey to dark grey but can range to tan and darker brown shades. Heat treatment creates hues of red and pink.
Contains fossils and is granular and with heat treatment much easier to work.
Photo courtesy of lukecreekwalker
Photo courtesy of Kentuckyflintguy
Photo courtesy of Hoss
Photo courtesy of CoachG
Kentucky, Indiana also Tennessee and Alabama
Crawford, Floyd and Harrison counties in south central Indiana and Jefferson and Knox counties in Kentucky
Mostly light grey to dark grey but can range to tan and darker brown shades. Heat treatment creates hues of red and pink.
Contains fossils and is granular and with heat treatment much easier to work.
Photo courtesy of lukecreekwalker
Photo courtesy of Kentuckyflintguy
Photo courtesy of Hoss
Photo courtesy of CoachG