AM_Nepheline_10
Formula: K.54 Na3.24 Ca.03 Al4 Si4 O16
Name: Nepheline
Unit cell: 9.9907 9.9907 8.3695 90.0 90.0 120.0 , V=723.47
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 = .0001 GPa, in air after decompression