Skelton, RichardWalker, Andrew M2015-12-100342-1791http://hdl.handle.net/1885/70089Omphacite, a clinopyroxene mineral with two distinct crystallographic sites, M1 and M2, and composition intermediate between diopside and jadeite, is abundant throughout the Earth’s upper mantle and is the dominant mineral in subducted oceanic crust. UnThe effect of cation order on the elasticity of omphacite from atomistic calculations201510.1007/s00269-015-0754-92015-12-10