AM_Zirsinalite Formula: Na6 Ca Zr Si6 O18 Name: Zirsinalite Unit cell: 10.593 10.593 10.593 58.13 58.13 58.13 , V=804.48 Space group: R-3C (167)

Pudovkina Z V , Chernitsova N M , Voronkov A A , Pyatenko Yu A , Doklady Akademii Nauk SSSR , 250 (1980) p.865-867, Crystal structure of zirsinalite Na6Ca{Zr(Si6O18)}, Locality: Koashva Mountain, Khibiny Massif, Kola Peninsula, Russia