AM_Na(Mg45Al10Si45)Si2O6
Formula: Na.968 Mg.494 Si4.487 O12
Name: Na(Mg.45Al.10Si.45)Si2O6
Unit cell: 9.3957 8.6262 5.2588 90.0 108.05 90.0 , V=405.25
Space group: P12/N1 (13)

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 J2