I don't know what this is, but it looks really cool, so I hope it's nothing I have to get rid of. This particular piece of rock had what looked like a thin layer of purple cement draped on part of it, and the cement had tubes sticking out. As of this morning, I thought it was something that was just dead, but today it looks like little hands sticking out of the tubes with a neon green center. Anyone familiar with this? I'll see if I can get a picture posted.