Why this rock is probably not a meteorite:
1) No fusion crust. The rock is
rounder than the previous one because it's been eroded by rubbing
against other rocks in a body of water.
2) If this were a lunar meteorite, as the finder suspected, the light-colored
things would be clasts. However, clasts in lunar meteorites
would not have rinds, and nearly all of these have some kind of
rind or reaction rim.
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What is it?
This rock is an amygdaloidal basalt, like
the previous one, in which the vesicles are now completely filled
with a secondary mineral like calcite or quartz.
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