Why this rock is probably not a meteorite:
This is a fragment of meteorite, another ordinary
chondrite.
OK, there is no smooth surface or fusion crust on this small fragment.
But, meteorites break apart. The inside (sawn face, bottom photo)
has finely disseminated metal grains, as is typical of an H chondrite.
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What is it?
The person who sent this sample bought a large stone (3 kg) from a
dealer who sells meteorites that have been found in the Sahara Desert.
Most of these "Northwest Africa" (NWA) meteorites - and
all the inexpensive ones - are really fragments of meteorites that
have broken apart, in part from weathering. Most have been sitting
out in the desert for thousands years.
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