Why this rock is probably not a meteorite:
1) No fusion crust.
2) Too full of holes. Meteorites don't have vesicles
like this.
3) The rock looks glassy or very finely crystalline. Most meteorites
are crystalline - they're composed mainly of mineral grains - but
the crystal size is large enough to see individual grains with the
naked eye (see ordinary chondrites).
Some have glassy portions, but none are all glass.
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What is it?
Can't tell from the photo.
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