Citation: Grice, J. D.; Ercit, T. S. (1993). Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Sample: Shorl 49356. Neues Jahrbuch fur Mineralogie, Abhandlungen, 165, pp. 245-266.
Formula: Al6.24 B3.09 F0.19 Fe1.939 H3.41 Li0.021 Mg0.7 Na0.96 O30.81 Si5.802 Ti0.208
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al27 B27 F3 Fe27 H9 Li9 Mg27 O96 Si18 Ti36 (Al9 B9 F Fe9 H3 Li3 Mg9 O32 Si6 Ti12)
Multiplicity: 1