Why this rock is probably not a meteorite:
1) No fusion crust.
2) The rock is rounded, but it appears to be from erosion, not ablation
during atmospheric entry (no regmaglypts)
3) The shape is a bit too geometrical (trapezoidal, from this angle)
for a meteorite. When terrestrial volcanic bodies cool and contract,
they sometimes form blocky polygonal fragments. The rocks of
Devil's Tower are a good example.
Meteorite impacts on asteroids or the Moon don't produce rocks with
geometric shapes like this.
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What is it?
Probably a diabase. This rock was found by the finder of the
previous rock. Both had very similar compositions.
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