Billwiseite

Nb_1.32O₁₈Sb₅Ta_1.28Ti_0.16W_1.24

Hawthorne, F. C.Cooper, M. A.Ball, N. A.Abdu, Y. A.Cerny, P.Camara, F.Laurs, B. M.

The Canadian Mineralogist (2012) 50, 805-814

a=54.116Å   b=4.9143Å   c=5.5482Å

α=90°   β=90.425°   γ=90°