AM_Beryl_8 Formula: Si6.111 Be2.859 Li.027 Al1.311 Fe.366 Mg.328 O18 Na.406 Cs.012 Name: Beryl Unit cell: 9.2736 9.2736 9.191 90.0 90.0 120.0 , V=684.53 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: 3