Table 2:
Typical rock brittleness obtained by experiment.
Order
Rock type
(Mpa)
(Mpa)
a
Grey diabase
127.9
53.3
2.40
b
Black diabase
102.7
33.7
3.05
c
Grey sandstone
75.4
20.8
3.63
d
Red sandstone
68.8
17.3
3.96