ID help please

[Ak3020]

Made off a flake creek find So illinois

 

[ToddsPoint]

Interesting.🤔 It looks like a finished piece. Just a blade. From the orange and purple color that could be Kaolin flint. Also, it was heated after it was made. You can see the “pot lids” on the flat side where moisture exploded and popped out the round spots. If you look in the pot lids, you can see they are glossy but the blade is not. That means it was heated after it was made. If it was heated before it was made, the whole thing would be glossy. It was probably heated accidentally.