AM_Nepheline_14
Formula: K.88 (Na2.94 Ca.06) Al3.93 Si4.04 Fe.03 O16
Name: Nepheline
Unit cell: 9.9979 9.9979 8.3852 90.0 90.0 120.0 , V=725.87
Space group: P63 (173)

Tait K T , Sokolova E V , Hawthorne F C , Khomyakov A P , The Canadian Mineralogist , 41 (2003) p.61-70, The crystal chemistry of nepheline, Note: sample 3, Locality: Monte Somma, Italy