AM_Wohlerite_1 Formula: Na2 Ca4 Zr Nb Si4 O17 F Name: Wohlerite Unit cell: 10.823 10.244 7.29 90.0 109.0 90.0 , V=764.21 Space group: P1211 (4)

Mellini M , Merlino S , Tschermaks Mineralogische und Petrographische Mitteilungen , 26 (1979) p.109-123, Refinement of the crystal structure of wohlerite, Locality: Brevig, Norway