Red Mulberry?

[Woody Stover]

Looks similar to some Red Elm splits that it is in the stack with, with the light-colored sapwood, but it is heavier which I'd expect since it's a higher BTU wood. This wood is dry.
These Red Elm splits are barkless, but this scaly bark looks somewhat similar, though not real close.
Pic 1) Red Elm, bottom. What I think may be Mulberry, top.
2) End grain, Red Elm left. Thing I noticed here was more distinct rings in the sapwood of the Red Elm.
3) Red Elm, bottom. Mulberry, top.
4) Fresh-split "Mulberry."
5,6) Bark pics.

 

[Kevin Weis]

That Mulberry must have been cut or dead for a while. Green Mulberry is usually yellow. Once cut and exposed to air it will turn brown quickly.

 

[Simonkenton]

It certainly resembles locust.

 

[Woody Stover]

That Mulberry must have been cut or dead for a while. Green Mulberry is usually yellow. Once cut and exposed to air it will turn brown quickly.

Yep, been split for a couple years. Thinking more about it, it was a tree that fell across one of my stacks. It was alive, and I posted about it. Somebody that was pretty good on wood ID, maybe @CincyBurner, thought it was White Mulberry, an introduced Mulberry variety.
I had it stacked separately, but I went out and looked, and apparently had mixed it into the Cherry, BL stack that I'm pulling from now.

It certainly resembles locust.

The wood and endgrain does but the bark is more scaly, not as thick and deep as BL, which I've gotten quite a bit of around here (not on our property, though.)

 

[Stinkpickle]

Burn a piece in a campfire and bump it halfway thru the burn. If it’s mulberry, it should give you a nice fireworks show.