the interesting thing about that rock is the transparent pokadots. I found another one last year ,just posted these pics , that has sea creatures,snail like things, there is one of those creatures in the first post. maybe the spots are
part of shrimp or fish or something. don't know whether it is agate or opalized for what the difference is. it is hard to see but the crystallized looking ball is the creature without its shell. Mabey dots are just wood grains never saw that before. Looks cool