AM_Surinamite_1 Formula: Mg2.27 Fe1.125 Al3.605 Be Si3 O16 Name: Surinamite Unit cell: 9.915 11.368 9.617 90.0 109.3 90.0 , V=1023.05 Space group: P12/N1 (13)

Barbier J , Grew E S , Halenius E , Halenius U , Yates M G , American Mineralogist , 87 (2002) p.501-513, The role of iron and cation order in the crystal chemistry of surinamite,, (Mg,Fe)3(Al,Fe)3O[AlBeSi3O15]: A crystal structure, Mossbauer spectroscopic,, and optical spectroscopic study