Greenacres, I personally would call yours a “stone hammer” rather than an axe …. simply because I really don’t think it is very old, antiquity wise that is.
Native Americans had been using flint and/or obsidian for several thousand of years and it was used for making arrowheads, spear points, knives and axes because of the extremely sharp edge that could be napped (flaked off) on them. Flint shards are used in some present day surgeries because they are “sharper” than the sharpest surgical tool that is factory made.
Here is a picture of my 5 ½” stone axe head …. and I am calling it an axe simply because it actually has a “beveled” cutting edge. But its cutting edge is no where close to being as sharp as the cutting edges on my 6 ½” knife or spear point pictured above it.
I have no idea where the axe head came from because I got in a “box lot” at an auction, thus I assume it was found somewhere in central WV. My father had a white/cream colored flint axe head that he found somewhere locally. It was about 4 ¼” b y 3” in size.
I found my spear point in Herkimer Cty., Upstate New York, and it was appraised to be around 10,000 years old by an Archaeology Professor at the local college. A true Paleolithic tool.