Why this rock is probably not a meteorite:
1) This rock has a smooth exterior (left), but it's not really a crust.
No crust is visible on the sawn face (left).
2) In the sawn face, there are a lot of holes, and many of them are
aligned. Meteorites don't have holes.
3) The rock is dense, it will lift a small magnet, and it has a gray
streak. Up close there are some shiny things,
but they're not metal; they appear to be yellowish sulfide minerals.
4) The rock is very fine-grained and there are no mineral grains that
appear to be silicate minerals evident on the sawn face.
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What is it?
The rock consists mainly of the mineral magnetite. We don't know whether
it is natural or man-made. There are solidified magnetite lavas on
Earth, and it's possible the rock is one of those. It was found in
east central New Mexico.
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