Why this rock is probably not a meteorite:

Here's a head-scratcher.

This photo shows a wooden deck with a rock embedded in it. As the finder correctly recognized, "It would take a significant amount of energy to shatter 1-1/2 inch redwood planking." He reasonably surmised that the rock might be a meteorite. It certainly appears to be a rock that fell from the sky at high speed.

The problem is that even in these photos the rock doesn't look like any kind of meteorite. There's no fusion crust. The pieces are all angular. The texture of the rocks is wrong. No kind of meteorite has veining like this.
What is it?

The finder brought this rock to a colleague of mine, an expert in meteorites, who concluded that it is a high-temperature terrestrial metamorphic rock.

I have no explanation for how this rock got embedded in this deck.
This is one of many stories I have heard about rocks appearing to have fallen from the sky. It is my observation that most such rock are about the size of a baseball or softball. That leads me to believe that some of them were thrown by humans. I don't believe that this one was thrown, however.

A story sent to me about this meteorwrong.


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.