AM_Feldspar_19
Formula: Pb.5 (Si1.42 Al.58) O4
Name: Feldspar
Unit cell: 8.44 13.051 14.325 90.0 115.33 90.0 , V=1426.20
Space group: I12/C1 (15)

Benna P , Tribaudino M , Bruno E , American Mineralogist , 84 (1999) p.120-129, High-temperature in situ structural investigation on lead feldspar, Sample at T = 465 C, split Pb atom model