AM_Barylite Formula: Ba Be2 Si2 O7 Name: Barylite Unit cell: 9.82 11.67 4.69 90.0 90.0 90.0 , V=537.47 Space group: PNMA (62)

Robinson P D , Fang J H , American Mineralogist , 62 (1977) p.167-169, Barylite, BaBe2Si2O7: its space group and crystal structure, Locality: amazonite pocket, Park County, Colorado, USA