AM_Barrerite_1
Formula: Na.986 K.398 Mg.035 Ca.246 (Al2.079 Si6.921) O20.38 H8.28
Name: Barrerite
Unit cell: 13.6744 17.8937 17.5723 90.0 90.0 90.0 , V=4299.69
Space group: AMMA (63)

Ori S , Mazzucato E , Vezzalini G , American Mineralogist , 94 (2009) p.64-73, Dehydration dynamics of barrerite: An in situ synchrotron XRPD study, Locality: Kuiu Island, Alaska, Note: BAR-A, T = 482 K