Amygdules

If a rock is full of amygdules, then it is not a meteorite

An amygdule is “a gas cavity or vesicle in an igneous rock which is filled with such secondary minerals as zeolites, calcite, quartz, or chalcedony.” 
These rocks are not meteorites, they are amygdalar terrestrial volcanic rocks. The vesicles have been filled in by secondary minerals (quartz, calcite, others) after the magma solidified. Note that none of these rocks has a fusion crust.

Amygdules have been found in meteorites from hot deserts. They formed after the meteorite landed on Earth from the meteorite being exposed to salt-rich fluids. Because vesicles are not prevalent in meteorites, neither are amygdules.