AM_Altisite_1 Formula: K5.5 Na3.5 Ti2 Si8 Al2 O26 Cl3 Name: Altisite Unit cell: 10.423 16.333 9.16 90.0 105.62 90.0 , V=1501.80 Space group: C12/M1 (12)

Ferraris G , Ivaldi G , Khomyakov A P , European Journal of Mineralogy , 7 (1995) p.537-546, Altisite Na3K6Ti2[Al2Si8O26]Cl3 a new hyperalkaline, aluminosilicate from Kola Peninsula (Russia) related to, lemoynite: crystal structure and thermal evolution, Sample: HT, T = 700 C, Locality: Kola Peninsula, Russia