Not sure what category to post this in. I will add a bunch of photos, first of typical Edwards Plateau Chert in the southern Hill Country Rootbeer variety, mainly from Kerr CO.
A couple of the samples show the banded and random spot inclusions, and a couple of samples show the tiny speckles floating in the rootbeer that come in a wide variety of colors.
The inclusions in Knife River Flint are quite different. And there is a wide range of color shade in both rootbeer and KRF. Some is light blond and some so dark it is only translucent on thin pieces. Unfortunately I don't have a wide variety of either right now. Some of you might, so feel free to add more pics if you like.
The large chunks of raw material are very easy to identify; some of the points look very similar. One big difference is the slick surface on Edwards and the sort of orange peel surface on some KRF.
More Edwards artifacts, I bought some of these at Temple:
Last pic, some of both side by side:
When looking at relics the patina is another variable that can make it confusing.
And repros are good to look at for comparison.
Thank you. That was a very educational post. Thats why I love this site.
Interesting post and pictures.
A culture truly grows great when old men plant trees in who's shade they know they will never sit.