AM_Orthopyroxene_7 Formula: Fe.967 Mg.923 Ca.01 Mn.016 Al.236 Si1.848 O6 Name: Orthopyroxene Unit cell: 18.0221 8.6456 5.1327 90.0 90.0 90.0 , V=799.74 Space group: PBCA (61)

Nestola F , Ballaran T B , Balic-Zunic T , Secco L , Dal Negro A , American Mineralogist , 93 (2008) p.644-652, The high-pressure behavior of an Al- and Fe-rich natural orthopyroxene, Sample: P = 8.033 GPa