AM_Feldspar_26
Formula: (Ca.2 Sr.8) Si2 Al2 O8
Name: Feldspar
Unit cell: 8.361 12.973 14.259 90.79 115.55 90.62 , V=1395.01
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 = 20 C