AM_Trikalsilite Formula: Na K2 Al3 Si3 O12 Name: Trikalsilite Unit cell: 15.339 15.339 8.501 90.0 90.0 120.0 , V=1732.19 Space group: P63 (173)

Bonaccorsi E , Merlino S , Pasero M , Neues Jahrbuch fur Mineralogie, Monatshefte , 1988 (1988) p.559-567, Trikalsilite: its structural relationships with nepheline and tetraskalsilite, Locality: Near Mt. Nyiragongo, Virunga volcanic field, North Kivu, Zaire