Why this rock is probably not a meteorite:

It's got a couple of big holes (gas bubbles) in it. Meteorites don't have holes like this.
What is it?

Whatever it is, it was once molten. It was found in Baltimore. There aren't any volcanoes in Maryland. It's magnetic. It's probably a piece of slag or some other industrial by-product.   


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.