Why this rock is probably not a meteorite:

There's no fusion crust. It doesn't have the smooth, aerodynamic shape of a meteorite. Meteorites are never flat like this.
What is it?

Don't know. Looks like a piece of concrete.


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.