Why this rock is probably not a meteorite:

The finder thought that this rock was a meteorite because he thought the coating was a fusion crust and because the rock is rounded. A meteorite this large would have regmaglypts; this rock doesn't have any. The finder sent a chemical analysis that he had done. The composition is inconsistent with any kind of meteorite (concentrations of alkali elements too high, concentration of chromium too low, Fe/Mg ratio too high, others).
What is it?

We don't know. Unfortunately, there are many processes on Earth that produce coatings on rocks.


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.