Citation: Yang, H.; Konzett, J.; Prewitt, C. T. (2001). Crystal structure of a new (21)-clinopyribole synthesized at high temperature and pressure. American Mineralogist, 86, pp. 1261-1266.
Formula: Al1.22 Ca1.52 H2 K1.1 Mg5.84 Na2.32 O36 Si12
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al8 H4 Mg14 O72 Si24 (Al4 H2 Mg7 O36 Si12)
Multiplicity: 1