Why this rock is probably not a meteorite:

1) No fusion crust, no smooth surface.  

2) It's much denser than any common rock, and strongly magnetic, but there are no metal grains visible (lower photo, sawn face). 

3) The interior is dark and very fine grained; no mineral grains are visible, just a few inclusions.
What is it?

This is a very nice piece of magnetite, an iron ore. Magnetite is dark gray and makes a gray streak; hematite is usually reddish and makes a reddish streak. The reddish areas in this rock are probably hematite. Magnetite and hematite are rare in meteorites and only occur in minor amounts when the do occur.


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.