AM_Beryl_13 Formula: Si6.045 Be2.94 Li.012 Al1.721 Fe.172 Mn.05 Mg.024 Ti.038 O18 Na.053 K.026 Cs.013 Rb.003 Name: Beryl Unit cell: 9.2364 9.2364 9.1933 90.0 90.0 120.0 , V=679.22 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: 7