a rock that is full of tiny, connected air spaces is PERMEABLE
Igneous rocks generally have extremely low porosity. An exception is pumice, which has abundant vesicles and therefore is very porous (though not permeable).
Pumice can be white, gray, or even pink.
No. Pumice is not magnetic.
No. Pumice is inorganic.
how did pumice get here
No. Pumice does not have grains.
Pumice is nonmetallic.
Pumice.
Yes. Pumice is defined as being highly vesicular.
Pumice is an extrusive igneous rock, not a mineral.
Igneous rocks range from the highly porous pumice to the nearly non-porous granite. In some explosive eruptions of felsic magma, as is the case with pumice, the frothy mixture of rock and gas cools so rapidly that open vesicles are preserved, making it very lightweight and porous. With granite, the intrusive igneous rock has had a long time to cool underground, and with its interlocking crystalline structure, it has an extremely low porosity.