Why this rock is probably not a meteorite:

It bears some resemblance to lunar meteorite MAC 88105. However, there's a glass vein running through the rock in the bottom photo, and that would be unusual for a meteorite.
What is it?

Don't know. This one is probably worth having tested. It was found in a dry lake bed in California.


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.