My brother happened to come across some petrified wood ain't no telling when. his friend came over and broke it in half by accident.
now, since it was broken, my brother has put it away in a drawer (sp?) and left it for a few months. just now, my brother happend to open it and see that the petrified wood has started to produce some kind of silver metalic powdery substance, it's slightly hard, but is powdery and falls apart.
now my brother and i have gotten curious on what that substance is, and google didn't have it.
could someone please help us??