AM_Wairakite Formula: Na.139 Ca.899 (Si4.1 Al1.9) O14 H4 Name: Wairakite Unit cell: 13.692 13.643 13.56 90.0 90.5 90.0 , V=2532.91 Space group: I12/A1 (15)

Takeuchi Y , Mazzi F , Haga N , Galli E , American Mineralogist , 64 (1979) p.993-1001, The crystal structure of wairakite