AM_Virgilite Formula: Li.333 (Al.333 Si.667) O2 Name: Virgilite Unit cell: 5.226 5.226 5.465 90.0 90.0 120.0 , V=129.26 Space group: P6222 (180)

Muller G , Paulus H , Stiefel J , Neues Jahrbuch fur Mineralogie, Monatshefte , 1990 (1990) p.493-503, Synthesis and structure of beta-quartz type, Na0.5H0.5AlSi206 as compared to LiAlSi206, Locality: synthetic, Note: stuffed beta-quartz type structure