thanks for the kind comments
This material typical of the Dakotas must be very easy to work
These points are VERY thin, only the thickness of a quarter or a touch more (1/16" to 3/32")
the 3 on the left are agate
the 2 in the middle seem to various colors of Knife river flint whicch I think was traded all over the country
The one on the right is chert (gray flint I believe)
I think this material must have been very easy to work The points I typically find are
The points I typically find are 30% flint, 30% chert, 30%agate and 10% Jasper
I am going to post a couple pictures of what I think are red jasper so I can get your valued and important opinions
I will grab a couple of these now and try to photograph and post them
Thanks