AM_Beryl_11 Formula: Si6.024 Be2.877 Li.099 Al1.652 Fe.234 Mg.116 O18 Na.315 Cs.04 Name: Beryl Unit cell: 9.2531 9.2531 9.1918 90.0 90.0 120.0 , V=681.56 Space group: P6/MCC (192)

Aurisicchio C , Fioravanti G , Grubessi O , Zanazzi P F , American Mineralogist , 73 (1988) p.826-837, Reappraisal of the crystal chemistry of beryl, Sample: 6