AM_Feldspar_23 Formula: Sr (Al1.9 Si2.1) O8 Name: Feldspar Unit cell: 8.399 12.963 14.266 90.0 115.39 90.0 , V=1403.20 Space group: I12/C1 (15)

Benna P , Bruno E , American Mineralogist , 86 (2001) p.690-696, Single-crystal in situ high-temperature structural investigation, on strontium feldspar, Sample T = 330 deg C