Rocklbr I have a question.
What is this?
I’m on the coast of Maine and there’s a looot of what looks and feels like limestone. I found this next to an ocean inlet where there tons of chunks of limestone broken in various sizes. Everything else seems solid, but not this one. When light is pressed up against that chipped area you can see that the rock inside the white area is semi-opaque and an amber-brown color.












