Not sure if this is anything, still learning. Does this rock look worked to anyone? Does it look like a material they would have used? If it is an artifact, what is it, and what is the material? Any comments are appreciated, as always, thanks in advance.
Your item looks similar to some material that I have found. But I do not see any definite flaking or alterations by man. Most of the artifacts that I have found using this material are crudely made choppers and fleshing tools. Keep at it and you will eventually be rewarded. Good Luck!
Looks natural but the shape is correct. When they needed a scraper sometimes they would find a rock in that shape and put a edge on it. Doesn't look as if they found that one though.