Why this rock is probably not a meteorite:

The finder of this 25-lb rock said that it wasn't on his lawn the day before.

There's no fusion crust and it doesn't have the aerodynamic shape of a meteorite. It's too light-colored.
What is it?

Looks like a piece of limestone. Go figure.


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.