I don't really know if anyone's done this yet, but here we go anyways. So this is just for statements of destroying a mountain without any actual scene of it occurring. The definition of a mountain states it's at least 610 m tall, so assuming the radius is the same, that gives us a volume of:
pi*610^2*(610/3)=237693947.368 m^3 or 237693947368000 cm^3
Using all the basic destruction values, we get:
Frag: 237693947368000*8=1.9015516e+15 J (Large Town level)
Violent Frag: 237693947368000*69=1.6400882e+16 J (Small City level+)
Pulverization: 237693947368000*214.35=5.0949698e+16 J (City level)
Vaporization: 237693947368000*25700=6.1087344e+18 J (Large Mountain level)
Atomization: 237693947368000*30852.2=7.3333812e+18 J (Large Mountain level)
Subatomic Destruction: 237693947368000*5.403e13=1.2842604e+28 J (Multi-Continent level)