Scientists are analyzing an extremely rare meteorite found by a farmer in a tiny Missouri town called Conception Junction (population 202), reports Washington University in St. Louis, which helped identify the rock.
An unnamed farmer had found the unusually heavy stone buried in the side of a hill. He sawed off the end of the stone and realized he had something that didn't come from Earth.
The metal rock is studded on the inside with green olivine crystals. It is one of only 20 so-called pallasite meteorites that have been found in the United States.
These types of meteorites are believed to be fragments of large asteroids that had enough internal heat to begin melting, which allowed heavy metals to sink and form a core, while lighter elements became part of the rocky surface.
Pallasites are believed to come from the area where an asteroid's metal core transitions to olivine in its lower mantle.
Read more at Discovery News
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