Looking through Overstreet, based on shape and size, your point resembles an Epps (3500-2000 YO) or one form of Kay Blade (1000-600 YO). I won't hazard a guess as to what kind of stone, though Burlington wouldn't surprise me. The Overstreet Arrowhead guide, especially a used one isn't real expensive (I think I paid $4 for my 7th edition and it's like new.) and with it you can pretty well narrow down what kind of point you have.