AM_Mullite_9 Formula: Al2.25 Co.015 Si.735 O4.86 Name: Mullite Unit cell: 7.5618 7.6882 2.886 90.0 90.0 90.0 , V=167.78 Space group: PBAM (55)

Popovic J , Tkalcec E , Grzeta B , Kurajica S , Schmauch J , American Mineralogist , 92 (2007) p.408-411, Cobalt incorporation in mullite, Sample: MU1