AM_Lorenzenite Formula: Na2 Ti2 Si2 O9 Name: Lorenzenite Unit cell: 8.7128 5.2327 14.487 90.0 90.0 90.0 , V=660.48 Space group: PBCN (60)

Sundberg M R , Lehtinen M , Kivekas R , American Mineralogist , 72 (1987) p.173-177, Refinement of the crystal structure of ramsayite (lorenzenite)