Why this rock is probably not a meteorite:
This is a polished, sawn face of a rock. The finder thought that it resembled some lunar meteorite breccias.

1) The grains are too rounded.  On the surface of the Moon and asteroids, there is no flowing water or blowing wind, so there is no mechanism to make rounded grains.  Impacts of meteoroids on the surface of asteroids and the Moon tend to make angular rock fragments. Chondrules in chondritic meteorites are more spherical than this.

2) Meteorites aren't this blue. The blue color may be a photographic artifact, however.  
What is it?

Probably a terrestrial sedimentary rock or volcaniclastic rock.


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.