AM_Darapiozite
Formula: (Mn1.46 Zr.28 Y.22 Mg.04) Na1.22 K1.36 Si12 (Li1.53 Zn1.14 Fe.33) O30
Name: Darapiozite
Unit cell: 10.262 10.262 14.307 90.0 90.0 120.0 , V=1304.80
Space group: P6/MCC (192)

Ferraris G , Prencipe M , Puatov L A , Sokolova E V , The Canadian Mineralogist , 37 (1999) p.769-774, The crystal structure of darapiosite and a comparison, with Li- and Zn-bearing minerals of the milarite group