Why this rock is probably not a meteorite:

This is a 10-lb rock that someone sent me. There's no fusion crust and the surface is very rough. Ther's nothing about it that suggests it's a meteorite.
What is it?

We're not sure. The rock gave a gray streak, but it's not at all magnetic, so it can't be magnetite. We think its a manganese oxide nodule. It was found in Arkansas.


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.