Citation: Bosi, F.; Lucchesi, S. (2004). Crystal chemistry of the schorl-dravite series Note: Tourmaline TM507e. European Journal of Mineralogy, 16, pp. 335-344.
Formula: Al5.628 B3 Ca0.335 Cr0.159 F0.054 Fe0.003 H0.507 K0.01 Mg2.715 Na0.479 O30.946 Si5.952 Ti0.039 V0.504
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al45 B9 Cr27 F3 Fe9 Mg27 O96 Si18 Ti9 V27 (Al15 B3 Cr9 F Fe3 Mg9 O32 Si6 Ti3 V9)