of five rocks. Density. Basalt 3'0144 c = 0'1763 + 0'000396t [between 0° and 60'J c = 0-1946 + 0'000575 (t — 60) [between 60° and 110°] k = 0'00317 1+0'0000lt - Marble 2'7036 c = 0'20279 + 0 ...

If something seems light for its size (like a bag of cotton or pumice rock), then we say it has low density. Mass is the amount of matter in an object. Volume is how much space the object takes up.

However, porosity and fracture density is generally low in the majority of the rock mass, leaving little room for water to enter, let alone flow throughout the rock. Granite contains more than 30 ...