I’ve hunted and knapped hornstone for many years. IL, IN, and KY. Unfortunately I never made it to TN. Hornstone is without a doubt the highest quality material in the Midwest. There are many subtypes that overlap in appearance. I put together a frame with 5-6 points I made from material from each of the 3 states. It’s my “Test Your Knowledge “ frame. I’ve shown this frame to many knappers and also collectors. So far, not a single person has correctly IDd them. I think without microscopic ID, it’s difficult or impossible to put a positive ID on all types hornstone visually.
