AM_Ca2Sr8Al2Si2O8_1 Formula: (Ca.2 Sr.8) Si2 Al2 O8 Name: Ca.2Sr.8Al2Si2O8 Unit cell: 8.256 12.842 14.088 90.51 115.38 90.88 , V=1349.14 Space group: I-1 (2)

Benna P , Nestola F , Ballaran T B , Balic-Zunic T , Lundegaard L F , Bruno E , American Mineralogist , 92 (2007) p.1190-1199, The high-pressure structural configurations of Ca0.2Sr0.8Al2Si2O8 feldspar: