A member of our local rockhound club gave me this piece at the recent meeting. The only info she could provide is what's written on the label stuck to the bottom: Ball's Falls, Vineland, Ontario. Thankfully I have that particular bit of info. Can any of you Ontario folks fill me in on any of the other stuff? I gather from basic geo maps that it's from the Lockport Group (Silurian)... any way to determine the formation and which slice of the Silurian?