AM_Rosenbuschite_1 Formula: Zr2 (Ti Mn) Ca7 Na5 Si8 O32 F4 Name: Rosenbuschite Unit cell: 10.12 11.39 7.27 91.33 99.67 111.83 , V=763.48 Space group: P-1 (2)

Shibaeva R P , Simonov V I , Belov N V , Soviet Physics Crystallography , 8 (1963) p.406-413, Crystal structure of the Ca,Na,Zr,Ti silicate rosenbuschite, Ca3.5Na2.5Zr(Ti,Mn,Nb)[Si2O7]2F2O(F,O), Locality: Kol skii Peninsula, Russia