Citation: Grice, J. D.; Ercit, T. S. (1993). Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Sample: Buergerite 43293. Neues Jahrbuch fur Mineralogie, Abhandlungen, 165, pp. 245-266.
Formula: Al6.41 B3.1 Ca0.04 F0.74 Fe2.53 H1.35 Mg0.06 Na0.88 O30.26 Si5.83 Ti0.07
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al27 B27 F3 Fe36 Mg9 O102 Si18 Ti18 (Al9 B9 F Fe12 Mg3 O34 Si6 Ti6)
Multiplicity: 1