AM_Durangite
Formula: Na Al As O4 F
Name: Durangite
Unit cell: 6.53 8.46 7.0 90.0 115.22 90.0 , V=349.85
Space group: C12/C1 (15)

Kokkoros P , Zeitschrift fur Kristallographie , 99 (1938) p.38-49, Uber die struktur des durangit NaAlF[AsO4], Locality: Durango, Mexico