AM_Mullite_12 Formula: Al2.36 Ge.64 O4.82 Name: Mullite Unit cell: 7.653 7.7779 2.9252 90.0 90.0 90.0 , V=174.12 Space group: PBAM (55)

Voll D , Lengauer C , Beran A , Schneider H , European Journal of Mineralogy , 13 (2001) p.591-604, Infrared band assignment and structural refinement of, Al-Si, Al-Ge, and Ga-Ge mullites, Sample: Al-Ge powder data