Yugawaralite_1 Formula: Si6 Al2 O19.69 Ca Name: Yugawaralite Unit cell: 6.75075 14.0285 10.0289 90.0 111.216 90.0 , V=885.39 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 = 454 K