AM_Hilairite-(Ba) Formula: Ba.958 Zr Si3 O12 H4.845 Name: Hilairite-(Ba) Unit cell: 20.976 20.976 7.857 90.0 90.0 120.0 , V=2993.87 Space group: R113 (1)

Zubkova N V , Kolitsch U , Pekov I V , Turchkova A G , Vigasina M F , Pushcharovsky D Y , Tillmanns E , European Journal of Mineralogy , 21 (2009) p.495-506, Crystal chemistry of Rb-, Sr-, Ba-, Ca- and Pb-exchanged forms of natural hilairite, Locality: Kirovskii mine, Khibiny alkaline complex, Kola Peninsula, Russia, Note: sample was synthesized by cation exchange at 150 C