AM_Thomsenolite Formula: Na Ca Al F6 O H2 Name: Thomsenolite Unit cell: 5.583 5.508 16.127 90.0 96.43 90.0 , V=492.80 Space group: P121/C1 (14)

Cocco G , Castiglione P C , Vagliasindi G , Acta Crystallographica , 23 (1967) p.162-166, The crystal structure of thomsenolite, Locality: Ivigtut, Greenland