I thought it was strange enough for a post. Glad y'all agree!
Dennis- John got this piece from a rockhound we know that has spent a lot of time collecting pet wood in NC and SC, but he has also collected out west at times.
We have seen wood that looks like this from NC, but have also seen wood like this from the northwest.
We suspect it is NC, but just not 100% sure.
Dave- That's what I was wondering. If it was some little pocket that just needed room to breath?
But what is the white growth? Some sort of silica formation?
Mark guessed Aragonite, which I thought was a good guess, but I have one more question.
Collin- First off, maybe we could get you to come by and lick this thing and tell us how it tastes.
But what I'm really wondering is, do you remember if that bag of pet wood you had that did something similar as this was tumble polished? I'm guessing it was.