Why this rock is probably not a meteorite:

1) No fusion crust.

2) It's full of holes; meteorites don't have holes.
 
What is it?

A porphyritic volcanic rock. Such rocks are common in the American west (this rock was found in Utah). A porphyritic rock is one where there are 2 distinct sizes of mineral crystals, one very small and the other large. This aspect is easier to see on the the other side of the rock, which is a sawn face. Nos. 086 & 129 are also porphyritic volcanic rocks
   

www.catchafallingstar.com
www.catchafallingstar.com


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.

e-mailkorotev@wustl.edu