I also would want to know what wood it is, that's part of the learning process when harvesting fuelwood.STop worrying about what it is and just burn it. You have cut it up, split it and now you want to what it is. It's firewood.
I have no idea what it is but I am sure it isn't Walnut or Mulberry, doesn't look right at all for them. The only wood that I have dealt with here in PA. with a purple tint is Box Elder but the grain doesn't look right for that either.
This is a real good one!