AM_Albite_31 Formula: Al Si3 Na O8 Name: Albite Unit cell: 8.133 12.773 7.159 94.23 116.64 87.72 , V=662.92 Space group: C-1 (2)

Meneghinello E , Alberti A , Cruciani G , American Mineralogist , 84 (1999) p.1144-1151, Order-disorder process in the tetrahedral sites af albite, Sample: untreated, Note: this sample of feldspar is from Stintino, Sardinia, Italy