I would lean more toward large uni-face flake knife, or scraper that hadn't been re-sharpened.
Under magnification, what I would call the bit, or blade looks like it has some use wear to me. Did you pick it up where you find other artifacts?
Wondering if this might be an axeView attachment 1107095View attachment 1107096View attachment 1107097
) here in Pa., you find them along the rivers, however, there a A LOT of conveniently broken rocks likes these. Sooo... You need to look for 2 slight notches typically, and also, as mentioned earlier, the bit end will have use wear/polishing... Otherwise, its another leaverite.