AM_Bismutotantalite_1 Formula: (Bi.68 Sb.32) (Ta.89 Nb.11) O4 Name: Bismutotantalite Unit cell: 4.9471 11.7878 5.6048 90.0 90.0 90.0 , V=326.85 Space group: PCNN (1)

Galliski M A , Marquez-Zavalia M F , Cooper M A , Cerny P , Hawthorne F C , The Canadian Mineralogist , 39 (2001) p.103-110, Bismutotantalite from northwestern Argentina: Description and, crystal structure, Sample: [Bi,Sb] phase, Locality: northwestern Argentina