Citation: Averbuch-Pouchot, M T (1987). Crystal structure of a tetrapoly-dipolyphosphate: Ca Nb~2~ = (P~4~ O~13~) (P~2~ O~7~).. Zeitschrift fuer Anorganische und Allgemeine Chemie, 545, pp. 118-124.
Formula: Ca Nb2 O21 P6
Chemical name:Calcium diniobium tetraphosphate diphosphate oxide