Why this rock is probably not a meteorite:

There is no fusion crust. No part of the surface is rounded or smooth. The density is distinctly high compared to most rocks. Up close there are regions of small, shiny crystals.
What is it?

It's a mass of sulfide minerals with a patch of hematite (reddish) - essentially an ore. It may be from a vein that formed in other rocks.

This type of material catches one's attention (the photo doesn't do it justice), but it's not a meteorite.


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.