Is pummel stone a porous rock?

Porosity or void fraction is a measure of the void (i.e., "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0--1, or as a percentagebetween...

In terms of weight, a stone is equal to 14lbs.

These are some porous rocks: chalk, limestone, sandstone, pumice, scoria.

one which allows water to seep between the gaps between the grains which make up the rock. This is because the grains are non-interlocking therefore water can get through. You can look at it a bit...

Yes, a stone is a Rock. Stone is just a synonym.