Citation: Bosi, F.; Lucchesi, S. (2004). Crystal chemistry of the schorl-dravite series Note: Tourmaline TMl3l. European Journal of Mineralogy, 16, pp. 335-344.
Formula: Al6.39 B3 F0.207 Fe1.665 K0.006 Li0.006 Mg0.906 Mn0.024 Na0.727 O30.793 Si5.94 Ti0.048 Zn0.018
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al45 B9 F3 Fe36 Li9 Mg27 Mn9 O93 Si18 Ti9 Zn9 (Al15 B3 F Fe12 Li3 Mg9 Mn3 O31 Si6 Ti3 Zn3)
Multiplicity: 1