Why this rock is probably not a meteorite:

There's no fusion crust and the surface isn't smooth. Where the rough exterior is missing, the shiny inside looks like agate.
What is it?

It wouldn't surprise me if this were a geode. Cut it in two!


Prepared by:

Randy L. Korotev

Department of Earth and Planetary Sciences
Washington University in St. Louis

Please don't contact me about the meteorite you think you’ve found until you read this and this.