matt2432
starting to spend too much on rocks
Member since December 2014
Posts: 171
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Post by matt2432 on Jan 12, 2015 20:53:52 GMT -5
As was requested by Snowmom, I'm posting some pictures of what I believe is knife river flint. The color certainly matches. This was self collected several miles north of the where the knife river runs into the Missouri river. From what I've read about knife river flint, it was a favored material of the Native Americans for making knifes and arrowheads and was traded a lot in the general area. Rough flint A piece back lit to show the color.
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Post by snowmom on Jan 13, 2015 4:58:53 GMT -5
thank you! I was interested in seeing rough as you found it because I wanted to see how it compared with some of the stuff I find here... It looks a bit like the stuff I find here, but isn't a match. Has the bottom piece with all the conchidal pattern been worked? I can see why it was/is sought after by knappers, it looks wonderfully consistent and is that cool smoky color! Bet it polishes like a dream!
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mjflinty
spending too much on rocks
Member since September 2011
Posts: 358
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Post by mjflinty on Jan 13, 2015 9:26:33 GMT -5
Yup, looks like Knife River Flint to me. I've been knapping for 20 years and have chipped a bunch of this stone. Works great and it's beautiful when you get it thin and semi-translucent. One piece you have pictured (center /left) that is somewhat triangular looks like primo knapping material. When I lived near St. Louis I actually found small pieces in the gravel bars of the Mississippi R. on occasion.
Michael
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matt2432
starting to spend too much on rocks
Member since December 2014
Posts: 171
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Post by matt2432 on Jan 13, 2015 10:32:49 GMT -5
Snowmom - All of the pieces were found as is. It certainly could have been worked at some point, but not by me. It polishes well, but unless you get it really thin you can't really see the color very much.
mjflinty- If I find some good size chunks that are free of fractures and inclusions, I'll keep you in mind. Maybe I can send you some. It's only mediaocore for tumbling
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hornseeker
spending too much on rocks
Member since January 2014
Posts: 268
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Post by hornseeker on Jan 14, 2015 19:00:14 GMT -5
Interesting... I have found a lot of that and could never put my finger on if it was some sort of low grade agate, or a weird jasper or just some chert... argued with a lot of folks that have tried to tell me its agate. Well... im sure composition is nearly identical, but its certainly not what most would consider a yellowstone/montana agate...
Glad I read this post! I'll put some pics on here someday when we thaw out (april??)
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,711
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Post by Fossilman on Jan 14, 2015 19:07:21 GMT -5
Matt,if you have bigger pieces,I'll horsetrade with ya' on rocks...............PM me if interested...Hve been looking for some like that.. Thumbs up....
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mjflinty
spending too much on rocks
Member since September 2011
Posts: 358
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Post by mjflinty on Jan 15, 2015 6:59:47 GMT -5
Sure thing, I'd be happy to chip some of your Knife River.
Thanks, Michael
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