Citation: Oberti, R.; Caporuscio, F. A. (1991). Crystal chemistry of clinopyroxenes from mantle eclogites: A study of the key role of the M2 site population by means of crystal-structure refinement sample SBB 25, Di55Jd30, diopside - jadeite join. American Mineralogist, 76, pp. 1141-1152.