Citation: Evans, R. J.; Fyfe, C. A.; Groat, L. A.; Lam, A. E. (2012). MAS NMR measurements and ab initio calculations of the 29Si chemical shifts in dumortierite and holtite. American Mineralogist, 97, pp. 329-340.
Formula: Al6.692 B O18 Si2.943
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al36 B4 O72 Si12 (Al9 B O18 Si3)
Multiplicity: 1