I tend to agree with Eddie and Steve.
Looks like someone long, long ago worked hard to thin that base.
There seems to be a hinge fracture there also. That is a Clovis trade mark.
Great patina.
The artifact does not have to be from Alberta, since you said the
father-in-law visited the northern regions of the US. Check for
a ground base and lower edges. Take to a professional.$$$$$$
Good luck, Zuma
It could be put in trust for a youngster or I could pm my address.
Zuma