Why this rock is probably not a meteorite:

It is a meteorite, an iron. Notice the regmaglypts. Iron meteorites may sometimes be reddish from rust. Iron meteorites often have shapes that are more bizarre than those of stony meteorites. They may also have more edges and protuberances because metal conducts heat better than silicate rock, so the exterior of the meteoroid doesn't get as hot as does that of a stony meteoroid during atmospheric entry.
What is it?

Someone brought this into my office saying that his father, a lapidary, had obtained it years ago. There was an illegible number on the other side written in the style of a museum collection. Unfortunately, there was no identification or documentation.


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.