AM_Nepheline_9 Formula: K.54 Na3.24 Ca.03 Al4 Si4 O16 Name: Nepheline Unit cell: 9.5587 9.5587 8.1051 90.0 90.0 120.0 , V=641.34 Space group: P63 (173)

Gatta G D , Angel R J , American Mineralogist , 92 (2007) p.1446-1455, Elastic behavior and pressure-induced structural evolution of nepheline:, Implications for the nature of the modulated superstructure, Locality: intrusive aplite of Snipe River, Tambani, Nyasaland, Malawi, Sample: P = 7.462 GPa