Impact fracture

[Older The Better]

Was sorting through a box of brokes, separating bifaces from the quick tools and cores and saw this. I believe it’s from an impact fracture but the opposite of the side you usually find,

 

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[CreekSide]

I’ve found a few where the reverse impact is. It’s where the shaft slips on impact. I wonder how fast they are going when they connect on the target to get a reverse impact? I’ve got one point where the impact starts on the tip and almost goes all the way to the base. Probably was hard throwing them between the trees