Citation: Groat, L. A.; Grew, E. S.; Evans, R. J.; Pieczka, A.; Ercit, T. S. (2009). The crystal chemistry of holtite Sample: H2. Mineralogical Magazine, 73, pp. 1033-1050.
Formula: Al6.39 As0.138 B O17.65 Sb0.21 Si2.65 Ta0.23
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al28 As12 B4 O72 Sb12 Si12 Ta4 (Al7 As3 B O18 Sb3 Si3 Ta)
Multiplicity: 1
Coordination sequences: