AM_Orthopyroxene Formula: Si1.986 Al.028 O6 Mg1.134 Fe.795 Mn.026 Cr.004 Ti.005 Ca.036 Name: Orthopyroxene Unit cell: 18.316 8.907 5.218 90.0 90.0 90.0 , V=851.27 Space group: PBCA (61)

Domeneghetti M C , Tazzoli V , Ballaran T B , Molin G M , American Mineralogist , 81 (1996) p.842-846, Orthopyroxene from the Serra de Mage meteorite: A structure-refinement procedure, for a Pbca phase coexisting with a C2/c exsolved phase, Sample Opx SDM N.13, natural