Citation: Hawthorne, F. C.; Cooper, M. A.; Ball, N. A.; Abdu, Y. A.; Cerny, P.; Camara, F.; Laurs, B. M. (2012). Billwiseite, ideally Sb3+5(Nb,Ta)3WO18, a new oxide mineral species from the Stak Nala Pegmatite, Nanga Parbat - Haramosh Massif, Pakistan: description and crystal structure. The Canadian Mineralogist, 50, pp. 805-814.