Citation: Bosi, F.; Lucchesi, S. (2004). Crystal chemistry of the schorl-dravite series Note: Tourmaline TM501e. European Journal of Mineralogy, 16, pp. 335-344.
Formula: Al6.213 B3 Ca0.007 Cr0.006 F0.021 Fe0.54 H0.405 K0.011 Mg2.208 Mn0.003 Na0.742 O30.978 Si6 Ti0.021 V0.003 Zn0.003
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al27 B9 Cr9 F3 Fe36 Mg27 Mn9 O96 Si18 Ti9 V9 Zn9 (Al9 B3 Cr3 F Fe12 Mg9 Mn3 O32 Si6 Ti3 V3 Zn3)