Worked tool-what do you call this?

[autographcollector11]

Found in Illinois. Appears to be Burlington chert with a clean break. Perhaps a blade base?
what do you think? Pretty thick for a flake and quite worked.
If it is a blade, woodland perhaps?

 

[autographcollector11]

Few more pictures

Same piece-few more pictures.

 

[NCPeaches]

It does looked worked and real nice color but I don't know what it is. Someone will come along shortly and let you know what they think.

 

[Mark Todd]

It looks more like a natural chert cobble to me. From what I can see in the pictures the break and edges appear time/water/weather worn rather than worked by man. There are a lot of cobbles in the creeks where I hunt in Illinois like yours. I suppose it could be a reduction flake but it doesn't look like one to me.
Good luck!

 

[autographcollector11]

The pictures do not clearly show the percussion scars, ripples or bulbs so the natural weathering approach doesn't seem to fit here. If it were natural, freeze thaw would break off flakes without impact scars or marks. Also, this was found on high ground, not in a water source.
I agree that the pictures are fair at best and do not show the true details.

Additional feedback is appreciated.

Thanks

 

[GatorBoy]

Looks like a quick made cutting edge on a piece of debitage