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Heat altered chert.

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  • Heat altered chert.

    Heat treating was used to improve knapability...If that's a word! Heat treating seems to have started in middle archaic times and more widely used in woodland time. A dovetail or Clovis made with heat altered material is a Red flag!! The blades are Bayport chert...The pink one is heat treated. The Snyders is heat treated burlington.


  • #2
    Click image for larger version

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    It's cool how the heat really changes the properties of the material. Really brings out some cool colors too!

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    • #3
      Indiana green turns red when heat treated

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      • #4
        Also burlington.

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        • #5
          Cool, the big one in my above pic is also Burlington, sorry about the lighting, it's pink and red.

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          • #6
            Heat treated Burlington

            Like a drifter I was born to walk alone

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