I found this point a while back while detecting along the beach, it was just sitting at the high tide line on the surface waiting for me to find it. I've never seen a form like this in the south, but what really strikes me is the material.
I'm up on midwestern flint types but not so much with eastern varieties. I've never seen that stuff before. If you must know what it is you could probably contact the Buffalo Museum of Science in NY. They have the John D. Holland lithic library. "Jack" Holland travelled the US obtaining flint samples for years. They are housed at the museum. I travelled with him two summers obtaining samples in IL and IN. There are hundreds of different material types in the US. It's mind boggling. Gary