AM_Dalyite
Formula: (K1.7 Na.3) Zr Si6 O15
Name: Dalyite
Unit cell: 7.371 7.73 6.912 106.23 111.45 100.0 , V=334.76
Space group: P-1 (2)

Fleet S G , Zeitschrift fur Kristallographie , 121 (1965) p.349-368, The crystal structure of dalyite