Pretty blade but what material?

Out Of Time

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Apr 10, 2019
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Here's a broken blade I recently found in a creek in Northern California. Unusual material - is it chert? If so, what type?

Thanks for looking


20190416_Dfinds.jpg
 

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Out Of Time

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Apr 10, 2019
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It's a pale green waxy material.
I didn't think it was an obsidian as it doesn't have a glassy feel or sheen.
But I just googled Burns Green obsidian (thanks Jon Stewart) and I saw examples of very similar colour.
Still, the texture seems off and the nearest source is in Oregon, as far as I can tell.
 

Jon Stewart

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Not all obsidian is created equal and the Natives did travel about. Without looking at it first hand it is hard to tell.
 

welsbury

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It doesn't have to be Burns Green oBS, there are various sources of green from here to N. Cali.
 

southfork

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It looks like Chrysoprase in the Quartz family found all over N. California all shades of green . This Martis Culture point is the same type of material found on the western slope of the sierras .
 

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Out Of Time

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Hi there, I think you mentioned Chrysoprase before, now seeing that beautiful Martis point, I'm convinced my blade is the same. Thanks for solving the mystery.
 

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