Why this rock is probably not a meteorite:

This is a piece of metal that someone found in a field near a railroad track. If you find an interesting rock near a railroad track, it probably fell off a train, not from the sky.
What is it?

Probably some industrial by-product - a piece of metal-rich slag. Our analysis showed it to be mostly iron, with some silicon but no (<1%) nickel. Metal in meteorites has 5-30% nickel.


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.