Why this rock is probably not a meteorite:

It is a meteorite. The tick marks at the top are spaced at 1-mm intervals. Click on image for enlargement.
What is it?

This is a sawn face of the Dhofar 007, a coarse-grained, brecciated eucrite. A generous meteorite dealer sent this beautiful sample to me for free when I bought some lunar meteorites. I reluctantly show this photo because this is a highly atypical meteorite that superficially resembles some terrestrial rocks. In detail, however, there is a piece of iron-nickel metal at the center of every rusty spot in the image. Neither metallic iron nor iron-nickel ever occurs in any natural Earth rock. If it's got rusty metal, it's either a meteorite or a man-made
material like slag.  


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.