u/ipinotthefool

I bought this rock a long time ago in northeast Arizona and it was labelled as petrified wood. I'm not quite sure what the long thin tubes on one side of this piece are (side B). They look like they run in layers, do they create tree rings or something else?

If this is part of a tree trunk, is it possible to tell which is the inside part and which part faced the outside/faced the bark? Any tells on what kind of a tree this was and could this be Arizona rainbow petrified wood? Is pretty heavy at 48.5 lb. It is about 13.5 inches x 8 inches.

It is has been cleaned, some parts appear to have dust/speckles on the outside but I think that is part of left behind matrix.

Thank you!