AM_Beryl_9
Formula: Si6.027 Be2.916 Li.027 Al1.574 Fe.3 Mg.176 O18 Na.425
Name: Beryl
Unit cell: 9.2666 9.2666 9.1874 90.0 90.0 120.0 , V=683.23
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: 1