Citation: Grice, J. D.; Ercit, T. S. (1993). Ordering of Fe and Mg in the tourmaline crystal structure: The correct formula Sample: Uvite 52210. Neues Jahrbuch fur Mineralogie, Abhandlungen, 165, pp. 245-266.
Formula: Al5.46 B3 Ca0.54 F0.62 Fe0.02 H3.33 Li0.006 Mg3.5 Na0.42 O30.38 Si5.99 Ti0.06
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al18 B9 F3 Fe9 H9 Li9 Mg27 O96 Si18 Ti36 (Al6 B3 F Fe3 H3 Li3 Mg9 O32 Si6 Ti12)
Multiplicity: 1