Orb-relaxed Nb8 Fe81 Co2 B26 boride candidate. CIF SHA256 4cd9ca53c9d2f4f0c1948a9cc77b39e4035b58944d44effce6829a2276a47c25. 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; Long et al., J.Appl.Phys.101,09N114(2007): https://www.andrew.cmu.edu/user/dl0p/laughlin/pdf/375.pdf. 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.