I can see the fairland attributes you have mentioned. They are noted for their thinness, this one doesn't appear to have the typical reduction you would find in such a high quality (appearing) chert expecially in the hafted area.I have only found 2. One made of poor quality, yellow and red rice grain chert. The other, high quality ft Paine chert, both were obvious on their typology. The high quality one narrow and thin, highly noticeable obtuse convex, almost notch like. It also had a cortex the maker had issues with thinning on the center of one side, but still managed to make a super thin piece, and killer secondary edge flaking. Gihlcrest would have an obvious almost ear like convex base with heavy grinding you can definitely rule that one out. Was this a multi occupational site or have you primarily found one period of attifacts in the general area, that may help rule one of the two out? Fairlands are pretty rare to come across.
