AM_Mullite_13 Formula: Ga2.31 Ge.69 O4.84 Name: Mullite Unit cell: 7.8674 8.0305 3.0148 90.0 90.0 90.0 , V=190.47 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: Ga-Ge powder data