Why this rock is probably not a meteorite:

1) No fusion crust.

2) This small rock is a cluster of small cubes. There is some kind of coating, but in the places where the coating is nicked, it's yellowish underneath (not really visible in photo). There are no meteorites that consist mainly of minerals with a cubic shape.
What is it?

Probably an aggregate of pyrite crystals. Pyrite doesn't occur in meteorites.


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.