Occupancy-collapsed ordered approximant of the neutron-refined Fe1.8Mn0.2P0.9Si0.1 structure (Thilakan, Ghorai et al., JMCA 2025), used only because structure-only moment models require ordered input: 3g Fe/Mn 0.8:0.2 collapsed to Fe, 2c/1b P/Si 0.9:0.1 collapsed to P. Hexagonal P-62m, a = 5.9156 Å, c = 3.4553 Å. The Mn (0.2/3g) and Si (0.1/nonmetal) content is NOT representable in this model — see the Gate 0 receipt for the stated limit.