Why this rock is probably not a meteorite:
1) We are unaware of any meteorite that has a high-contrast interior
with this type of texture.
2) On some meteorites, portions of the exterior may be broken and
rough. The concave-outward portions, however, should be smoothed
from ablation during atmospheric entry. The exterior of this
rock is not smooth, as we'd expect for a meteorite.
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What is it?
Like no. 17, it looks like an amygdaloidal
basalt with calcite, quartz, or some other secondary minerals
now filling the voids.
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