Citation: Leclaire, A; Benabbas, A; Borel, M M; Grandin, A; Raveau, B (1989). A Niobium Phosphate Bronze Closely Related to the ITB Tumgsten Bronzes: K~7~ Nb~14+x~ P~9-x~ O~6~$0 (x= 0.13). Journal of Solid State Chemistry, 83, pp. 245-254.
Formula: K7 Nb14.13 O60 P8.87
Chemical name:Potassium niobium phosphorus oxide (7/14.1/8.9/60)