AM_Yugawaralite_2 Formula: Si6 Al2 O19.07 Ca Name: Yugawaralite Unit cell: 6.7836 13.9842 10.0736 90.0 111.443 90.0 , V=889.47 Space group: P1C1 (7)

Artioli G , Stahl K , Cruciani G , Gualtieri A , Hanson J C , American Mineralogist , 86 (2001) p.185-192, In situ dehydration of yugawaralite, Sample: at T = 581 K