This is a stone I picked up while arrowhead hunting in Howard County Indiana. I originally thought it was some kind of stone tool because of the many percussion flaked looking spots and the overall stone axe-like shape. After I cleaned it and got a better look at it, I could see most of the surface covered in melt type features, particularly at what I call the “front” edge, where the melting is the heaviest. And looking closer in the “percussion flake” marks, they seem to be affected by…