Why this rock is probably not a meteorite:

It looks something like a lunar breccia, but the big "clast" on top has a coating or rind, and that doesn't happen in lunar breccias. Also, the aspect ratio (length/width) of some of the "clasts" is much too high for any lunar breccia (typically less than 3 to 1).
What is it?

It's from New Mexico. It's some kind of volcaniclastic rock, that is, it's igneous, not sedimentary. See no. 118.


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.