My experience is with "hydrated" lime, one form used for agriculture. It is very finely ground, resulting in almost no airspace in between particles - as a result, rather dense.
A 50 lb bag of lime is maybe a fifth the size of a 50 lb bag of fish feed. It is only about half the size of 50 lbs of the minerals I give my cattle.
Alternatively, a 20 ton pile of limestone is not all that big; a 20 ton pile of lime would be smaller since it has smaller particles & almost no air.
You can, however, make 20 tons of either limestone or lime MUCH bigger by spreading it by hand.
