Citation: Komatsu, K.; Kuribayashi, T.; Kudoh, Y. (2003). Effect of temperature and pressure on the crystal structure of topaz, Al2SiO4(OH,F)2 : Sample Pax02 at 3.7 GPa. Journal of Mineralogical and Petrological Sciences, 98, pp. 167-180.
Formula: Al2.01 F1.57 H0.43 O4.43 Si
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al8 F8 O16 Si4 (Al2 F2 O4 Si)
Multiplicity: 1
Coordination sequences: