Hunting Native Artifacts #21 Is This A Tool We Found, Or Just A Weird Rock?

Went to the fields for a quick search and found a few interesting items. Need help identifying one rock she found. Looks like it could be, and possibly was, used as a tool. It's definitely out of place among the common field rocks. Any help with ID is appreciated. Thanks for watching.

[@Ontario_Rockhound]

That quartz crystal at 3:56 is very nice!

[@Carolinaishome]

Thanks! It was pretty cool finding that one.

[@matthewmurray4516]

That is crushing on the river cobble.

[@matthewmurray4516]

That is a core for sharp expedient flakes. See the flake scars?

[@matthewmurray4516]

That is a chopper. They picked it up because it had a natural edge ready to use