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  • Rockcrk
    replied
    I agree. Would have made a lot of arrowheads or knives. That's why it's so unusual to see a big tool like this made from a silicate.

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  • clovisoid
    replied
    Great looking material.

    The big spall could have been a lot of things, but my guess is was planned to be a core. In the hands of a great knapper that piece would have made a lot of little agate points if traded down river. Along the way it could have been used as a heavy cutting tool, etc.

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  • Garguy
    replied
    The large item posted is a large spall struck and heat treated. The fire pop might have prevented the maker from continuing the reduction process. Also it looks like he took test fakes around the edge so it jay gave been discarded because it didn't work well or just stored to be used later.
    Last edited by Garguy; 10-14-2021, 11:57 PM.

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  • redrocks
    replied
    Very nice!

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  • Rockcrk
    replied
    That's the other side.
    Attached Files

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  • Rockcrk
    replied
    Yeah....a miracle for sure.

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  • Fla.Hillbilly
    replied
    And how it didnt shatter when it popped is another qwandry

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  • Talkingpoints
    commented on 's reply
    Thats real nice!

  • Rockcrk
    replied
    It does look like a fire pop also but grabbing it on the narrow end the thumb is in a perfect spot to fit in that hole. I have a couple pieces that are fire popped but arrowheads. I do know opal had a lot more water in it than agate per se but my favorite point is a Carnelian agate fire popped Columbia plateau Arrowhead
    Attached Files

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  • Ron Kelley
    replied
    It's a good sized spall. What you're calling a thumb-hole looks like a fire pop. There is water within the rock and when it's subjected to fire it will pop out cavities like that.

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  • Rockcrk
    replied
    Yeah. Definitely used for butchering. I like the thumb hole so their hands didn't slide off when bloody.

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  • SurfaceHunter
    replied
    Could be most of us can them choppers same thing though

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  • Rockcrk
    started a topic Hand ax?

    Hand ax?

    This was found on the Clearwater River. It is a Big piece of high quality Idaho common opal. I believe it to be a hand ax. I've seen alot of semi-precious gem stone artifacts come out of my area but nothing of this size. Tools of this size were usually saved for the more abundant basalt, granite, andesite, and quartz.
    Attached Files
    This was found on the Clearwater River. It is a Big piece of high quality Idaho common opal. I believe it to be a hand ax. I've seen alot of semi-precious gem stone artifacts come out of my area but nothing of this size. Tools of this size were usually saved for the more abundant basalt, granite, andesite, and quartz.
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