Orb-relaxed Nb8 Fe84 B26 boride candidate. CIF SHA256 f15dc199e7f7ee9a79287d98598af03ad66cb8db1af0a3f34a77446ee0c35273. Unconstrained variable-cell ML relaxation; no DFT. Ouro same-formula novelty, hull stability and magnetic performance remain under review; cross-composition framework novelty is separate. Derived from published Leithe-Jasper et al., MPI CPfS Scientific Report2009, pp113–118; coordination precedent only: https://www1.cpfs.mpg.de/web/docs/scientreport/report2009_data/I3.pdf?cpfs_id=000468. Known scaffold reference https://aflow.org/prototype-encyclopedia/A6B23_cF116_225_e_acfh-001/; authored-parent input SHA256 . Terms: See CIF attribution. Published parent framework; the authored mutation is not an experimentally established material.