AM_Yoshiokaite
Formula: Si2.65 Al5.35 O16 Ca2.676
Name: Yoshiokaite
Unit cell: 9.927 9.927 8.22 90.0 90.0 120.0 , V=701.52
Space group: P11-3 (1)

Steele I M , Pluth J J , American Mineralogist , 75 (1990) p.1186-1191, Crystal structure of synthetic yoshiokaite, a stuffed derivative of the, tridymite structure