material types

[larson1951]

i took these pictures from a library display
they show the more common and prolific types of material used in the dakotas
as you will see the KRF (knife river flint) is used quite a bit
also the gray material we call TRSS and the correct spelling
larson1951

 

[Neogeo]

I LOVE it!!!!!!Great pics...Thanx Bro

 

[mamabear]

what a great library you have! nice pix. thanx

 

[Bajahunter]

Very helpful. Being a rock hound I am always interested in the types of material that was used in the different parts of the country.
Thank you.