AM_Mullite_6
Formula: Na.335 Al3 O4.665
Name: Mullite
Unit cell: 7.6819 7.681 2.91842 90.0 90.0 90.0 , V=172.20
Space group: PBAM (55)

Fischer R X , Schmucker M , Angerer P , Schneider H , American Mineralogist , 86 (2001) p.1513-1518, Crystal structures of Na and K aluminate mullites, Sample: Na