Why this rock is probably not a meteorite:

The finder of this rock (we're looking at a polished, sawn face) noticed that it looked somewhat like lunar meteorite Northwest Africa 032.  It does.  Both are volcanic rocks.  Volcanism occurs on several planetary bodies, so we would expect the resulting rocks to all look similar.  Volcanic rocks are very common on Earth.
What is it?

Some type of terrestrial igneous rock, probably an andesite.


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.