Citation: Bloodaxe, E. S.; Hughes, J. M.; Dyar, M. D.; Grew, E. S.; Guidotti, C. V. (1999). Linking structure and chemistry in the schorl-dravite series Sample Ru-T18-92. American Mineralogist, 84, pp. 922-928.
Formula: Al6.318 B3 Ca0.061 Cr0.006 F0.331 Fe0.789 H2.682 K0.031 Li0.006 Mg1.734 Mn0.006 Na0.626 O30.669 Si6 Ti0.123 V0.009
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al27 B9 Cr9 F3 Fe9 Li9 Mg27 Mn9 O102 Si18 Ti9 V9 (Al9 B3 Cr3 F Fe3 Li3 Mg9 Mn3 O34 Si6 Ti3 V3)
Multiplicity: 1