Why this rock is probably not a meteorite:

1) No fusion crust.

2) This "rock," about 3 inches across, is composed of greenish glass.  Meteorites are are not so glassy or green.

3) Meteorites don't have layers or large-scale swirly features like this.
What is it?

This is almost certainly a man-made object, probably some industrial by-product. The object (this is a small piece) was found buried in the ground near St. Louis in an area that appeared not to have been disturbed.  However, people have been manufacturing things in the area for several hundred years and floods and bulldozers have redistributed a lot of soil and rocks.


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.