Zr2NbFe9, P-3m1, hexagonal AB3 stacking (ZrFe3 family) with Nb ordered on one Zr site in three. Built by substitution into a Materials Project prototype and relaxed with Orb v3 on Ouro. Energy above hull 1.6 meV/atom on the Orb v3 surface; no imaginary phonon modes; absent from MP, Alexandria, GNoME and COD. ML-only: not checked with DFT.