Citation: Shen, J.; Moore, P. B. (1984). Crystal structure of cappelenite, Ba(Y,RE)6[Si3B6O24]F2: a silicoborate sheet structure. American Mineralogist, 69, pp. 190-195.
Formula: B6 Ba F2 O24 Si3 Y6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: B6 F2 O24 Si3 Y6 (B6 F2 O24 Si3 Y6)
Multiplicity: 1
Coordination sequences: