Mt. Jasper Rhyolite
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Thread: Mt. Jasper Rhyolite

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  1. #1
    us
    Mar 2018
    Todds Point, IL
    1,870
    3279 times
    Metal Detecting

    Mt. Jasper Rhyolite

    Here's a couple of points I made out of MJ rhyolite 20 yrs. ago. A guy from NH sent me some chunks and wanted some points. Mean stuff for a midwestern knapper not used to it. I sent him these 3 points. Gary

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  2. #2
    us
    Jan 2011
    902
    734 times
    Nice work. Did you have to cook it up first? Maybe some heat will tame it a bit.
    ToddsPoint likes this.

  3. #3
    us
    Aug 2013
    Kansas
    Garrett 1500 Tesoro Vaquero Tesoro Silver Sabre micro max Makro Racer 2 Makro Multi Kruzer
    226
    270 times
    Relic Hunting
    Nice job on the points. Was it tough to flute? What method did you use to flute? Looks like it took a couple shots on the one side.
    Beautiful work.
    ToddsPoint likes this.

  4. #4
    us
    Mar 2018
    Todds Point, IL
    1,870
    3279 times
    Metal Detecting
    Quote Originally Posted by Jon Stewart View Post
    Nice work. Did you have to cook it up first? Maybe some heat will tame it a bit.
    Rhyolite is an igneous rock. It's already been heated by volcanic action. Heat won't change it, unfortunately. Born mean, always mean. Gary

  5. #5
    us
    Mar 2018
    Todds Point, IL
    1,870
    3279 times
    Metal Detecting
    Quote Originally Posted by kansa54 View Post
    Nice job on the points. Was it tough to flute? What method did you use to flute? Looks like it took a couple shots on the one side.
    Beautiful work.
    I fluted it with a lever jig. First side shown I got a good long flute but crooked. Had to take another one to flatten it out a bit. Side two, first flute was a dud. Reset platforms and took two narrower flutes so five altogether. Gary

  6. #6
    us
    May 2014
    Eastern Shore Maryland
    3,040
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    All Types Of Treasure Hunting
    Banner Finds (1)
    Nice work , looks like you figured out how to work with it. It has some nice color to it for rhyolite most of the pieces I find are just a dull grey but sometimes a few nice streaks of a darker blue color running thru
    ToddsPoint likes this.
    I would rather see an authentic broken scraper posted than a G-10 Artifake!

  7. #7
    us
    Jan 2011
    902
    734 times
    You may want to toss it into a kiln and crank it up to 900. Bet that will change it. I know of guys that cooked some lower grade obsidian and it changed a bit. It is just a thought. Still nice looking work on that tough stuff.
    ToddsPoint likes this.

 

 

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