Dry bulk densities for various rock types

Table
Dry bulk densities for various rock types
rock type number of samples mean (grams per cubic cm) standard deviation mode (grams per cubic cm) median (grams per cubic cm)
all rocks 1,647 2.73 0.26 2.65 2.86
andesite    197 2.65 0.13 2.58 2.66
basalt    323 2.74 0.47 2.88 2.87
diorite      68 2.86 0.12 2.89 2.87
dolerite (diabase)    224 2.89 0.13 2.96 2.90
gabbro      98 2.95 0.14 2.99 2.97
granite    334 2.66 0.06 2.66 2.66
quartz porphyry      76 2.62 0.06 2.60 2.62
rhyolite      94 2.51 0.13 2.60 2.49
syenite      93 2.70 0.10 2.67 2.68
trachyte      71 2.57 0.10 2.62 2.57
sandstone    107 2.22 0.23 2.22 2.22
Source: After data from H.S. Washington (1917) and R.J. Piersol, L.E. Workman, and M.C. Watson (1940) as compiled by Gary R. Olhoeft and Gordon R. Johnson in Robert S. Carmichael, ed., Handbook of Physical Properties of Rocks, vol. III, CRC Press, Inc. (1984).
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