AM_Boromullite Formula: Al4.5 B.5 Si O9.5 Name: Boromullite Unit cell: 5.7168 15.023 7.675 90.0 90.0 90.0 , V=659.16 Space group: CMC21 (36)

Buick I S , Grew E S , Armbruster T , Medenbach O , Yates M , Bebout G , Clarke G , European Journal of Mineralogy , 20 (2008) p.935-950, Boromullite, Al9BSi2O19, a new mineral from granulite-facies metapelites, Mount, Safford, central Australia: a natural analogue of a synthetic boron-mullite , Locality: Mount Safford, central Australia