Citation: Bosi, F.; Lucchesi, S.; Reznitskii, L. (2004). Crystal chemistry of the dravite-chromdravite series Note: Tourmaline TMt6b. European Journal of Mineralogy, 16, pp. 345-352.
Formula: Al2.364 B3 Ca0.068 Cr4.029 F0.332 Fe0.036 H2.982 K0.017 Mg2.322 Na0.892 O30.668 Si5.976 Ti0.03 V0.243
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al36 B9 Cr27 F3 Fe9 H9 Mg27 O93 Si18 Ti9 V9 (Al12 B3 Cr9 F Fe3 H3 Mg9 O31 Si6 Ti3 V3)
Multiplicity: 1