I love it when Forum visitors come by with pictures of things they've found. It's refreshing when ordinary, non-geological people respond to objects as they really are. This piece of waste from some historical glassmaker is a great example. The geologist ignores it because it's so obviously not a real rock. The ordinary person loves it because it's so obviously beautiful. Only the industrial archaeologist can tell us what it really is, whatever "really" means. All I know is that industrial waste of all kinds follows humans around, even in places you might think are pristine like the long-reforested environs of Muncy, Pennsylvania, where this was found. It's a pleasure to add it to the gallery of artificial rocks.
Photo by Forum member cchopper1