Knife or preform? From Illinois

[Arrow1492]

Hi all
If you had to guess, is this a knife or preform? Flaking is decent and quite thin.
From northern Illinois. Perhaps woodland?
Looks like chert-perhaps heat treated?
Any ideas are appreciated.
Thanks

 

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[sawmill man]

You say thin ,i would probably go with knife.

 

[arrow86]

Id say knife , were both pieces rite next to each other ?

 

[mn9000]

Is there 2? Or are all the photos of a single artifact? Your first photo is excellent by the way.

 

[Arrow1492]

These were found next to each other-it was repaired.
All are of the same artifact.

 

[georgia flatlander]

I'd say multi-use knife

 

[Dirt fishing Wolf]

I would say you have a preform. I find a lot of them here in Boone county Illinois.

 

[Arrow1492]

Dirt fishing wolf
Any idea what type of preform?
Thanks

 

[Dirt fishing Wolf]

Compared to your last pic. I found this one last year.

 

[Arrow1492]

Whether it be knife or preform, are these representative of any specific era?

 

[Mark Todd]

Just my 2 cents worth, your piece appears either to be a natural large flake off of a chert nodule that has been worked a bit on two ends for cutting and hafting, or an older artifact that was recovered and reworked. If that was the case the more patinated surface in the middle is nodule cortex, or it isa much earlier worked surface.