Density...

Density, s, is the intrinsic unit mass of a material, defined as the mass of one cubic meter with units of kilograms per cubic meter (kg/m³).  However, the old cgs units of grams-per-cubic-centimeter are still widely used.  One gm/cc is equivalent to1,000 kg/m^3.Porosity...

Porosity, saturation, and density are related as a function of porosity F as:

                                                                (1)

in which subscripts f and m refer to the formation and the matrix, respectively, and S is the fractional water saturation.  A water density of 1,000 kg/m³ is assumed.  Figure 1 shows the density ranges of common materials.

Figure 1.  Density ranges in common materials.