Old Stone Tools - Saugatuck River (SW CT)

I had occasion to visit an old friend in W. Redding CT. Here are some photos she sent of stone artifacts we looked at in the past.
A beautiful pink quartzite core. From all the flake scars you can tell it was used to get a supply of smaller flakes.

I think the following is an old axe or perhaps a hoe. She writes:
The Axe might be just a rock.. OR, it could be a digging implement, since doesn't really have a honed edge and no visible signs of hard use. My feeling is it's for digging, if it's for anything.

My comment: the upper right hand edge is wavy, shows signs of having been a sharpened edge.But with that beautiful symmetry I believe it was for something.