AM_(Na97Mg03)(Mg24Al55Si21)Si2O6
Formula: Na.97 Mg.27 Al.55 Si2.21 O6
Name: (Na.97Mg.03)(Mg.24Al.55Si.21)Si2O6
Unit cell: 9.4429 8.5946 5.2437 90.0 107.741 90.0 , V=405.33
Space group: C12/C1 (15)

Yang H , Konzett J , Frost D J , Downs R T , American Mineralogist , 94 (2009) p.942-949, X-ray diffraction and Raman spectroscopic study of clinopyroxenes with six-coordinated, Si in the Na(Mg0.5Si0.5)Si2O6 - NaAlSi2O6 system, Note: Sample J4