AM_Feldspar_27
Formula: (Ca.2 Sr.8) Si2 Al2 O8
Name: Feldspar
Unit cell: 8.367 12.968 14.266 90.68 115.51 90.54 , V=1396.72
Space group: I-1 (2)

Benna P , Bruno E , American Mineralogist , 88 (2003) p.1532-1541, Single-crystal in situ high-temperature structural investigation of the I-1 - I2/c phase, transition in Ca0.2Sr0.8Al2Si2O8 feldspar, T = 200 C