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Offline Knapper

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  • David Atnip
Whats This
« on: September 09, 2013, 11:59:14 am »
Deerhunter and myself went rock hunting and found this. Now its from SE Oklahoma. Allan has some local points he's found made from this. Its actually a little coarse and is hard to work but is possible. Haven't tried to heat treat it yet. We did find some a little glassy though. Can anyone ID?
Knapper
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Offline chief deer

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Re: Whats This
« Reply #1 on: September 09, 2013, 12:09:01 pm »
Pretty sure it is John's Valley Chert. Mike
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Offline Knapper

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Re: Whats This
« Reply #2 on: September 09, 2013, 02:22:51 pm »
Does it heat treat well, Chief deer?
Knapper
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Offline cowboy

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  • Paul Wolfe. Springtown, TX
Re: Whats This
« Reply #3 on: September 09, 2013, 11:03:08 pm »
Don't have a clue but cool looking rock.
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Offline JackCrafty

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Re: Whats This
« Reply #4 on: September 10, 2013, 01:31:15 pm »
Looks like rhyolite.  If it is, it won't respond to heat.  Try the heat anyway.

Cook at 200 degrees for 24 hours then crank it up to 400 for 4 hours.  Let cool for 12 hours then take it out and bang on it.  If it has improved, you got yourself some good ol' chert.   :)
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Any critter tastes good with enough butter on it.

Patrick Blank
Midland, Texas
Youtube: JackCrafty, Allergic Hobbit, Patrick Blank

Where's Rock? Public Waterways, Road Cuts, Landscape Supply, Knap-Ins.
How to Cook It?  200° for 24hrs then 275° to 500° for 4hrs (depending on type), Cool for 12hr

Offline Knapper

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Re: Whats This
« Reply #5 on: September 10, 2013, 03:26:33 pm »
Thanks Patrick, As soon as I get the floor back in my shop that's what ill do
Knapper
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Offline chief deer

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Re: Whats This
« Reply #6 on: September 10, 2013, 06:52:17 pm »
Don't know if Ryolite is in SE OKLA but Johns Valley is around the Talahina drive. Not sure if it improves with heat or not. I have worked a little and it was raw, The good stuff chips pretty good. Looks like what you chipped worked pretty good. Mike
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Offline mullet

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Re: Whats This
« Reply #7 on: September 10, 2013, 07:03:46 pm »
If it's Ryolite it will help to heat it, but at a high temperature. James Parker has been doing it.
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 If you have to pull the trigger, is it really archery?

Offline caveman2533

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  • Steve Nissly
Re: Whats This
« Reply #8 on: September 10, 2013, 09:35:40 pm »
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Offline Knapper

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Re: Whats This
« Reply #9 on: September 11, 2013, 10:36:29 am »
Mullet,
    My first heat treat session will be at the 400 range, if there is no change at what temp is Mr. Parker working at 6 to 8?
Knapper
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Offline YosemiteBen

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Re: Whats This
« Reply #10 on: September 11, 2013, 02:12:16 pm »
whatever it is it is purty!
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Offline mullet

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Re: Whats This
« Reply #11 on: September 11, 2013, 06:15:27 pm »
I think when James was telling me about ithe was heating it in the 800 range.
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Lakeland, Florida
 If you have to pull the trigger, is it really archery?

Offline AncientArcher76

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Re: Whats This
« Reply #12 on: September 12, 2013, 03:31:51 am »
Looks like some tough NY stone...but good job on it.  Let us know how the heat treating goes!

Russ
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Time, dedication, cuts, tons of broken rock, a wife, and perhaps a few girlfriends are some of what it takes in becoming a skilled flint knapper!!!
 
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