Can someone provide relative densities of common rocks?

Question

Density contrast in rocks help in interpretation of geophysical survey data.

Answer 1

Andesite 2.5 - 2.8
Basalt 2.8 - 3.0
Coal 1.1 - 1.4
Diabase 2.6 - 3.0
Diorite 2.8 - 3.0
Dolomite 2.8 - 2.9
Gabbro 2.7 - 3.3
Gneiss 2.6 - 2.9
Granite 2.6 - 2.7
Gypsum 2.3 - 2.8
Limestone 2.3 - 2.7
Marble 2.4 - 2.7
Mica schist 2.5 - 2.9
Peridotite 3.1 - 3.4
Quartzite 2.6 - 2.8
Rhyolite 2.4 - 2.6
Rock salt 2.5 - 2.6
Sandstone 2.2 - 2.8
Shale 2.4 - 2.8
Slate 2.7 - 2.8
g/cm3

Answer 2

Here's a list of some of them

http://www.mininglife.com/Miner/general/Density.htm