The section samples a portion of an interior slice, including the surface of the sample. No fusion crust remains on the meteorite, although phosphides in the thick (~3-4 mm) heat-altered zone often exhibit spherical voids suggestive of micromelting and volatilization. The heat altered zone is dominated by an irregular plessitic structure, while the interior exhibits a more regular plessitic to micro-Widmanstätten pattern with rare platelets of kamacite and abundant rhabdite phosphides. The entire meteorite appears to have formed from a single austenite crystal. A microprobe traverse finds kamacite, zoned taenite with rim compositions up to 30 wt.% Ni, and rare Ni-rich (45 wt.%) phosphides. The bulk composition is approximately 9.9 wt.% Ni, 0.7 wt.% Co and 0.2 wt.% P. The meteorite is a Ni-rich ataxite and chemically and structurally similar to some high-Ni IVA irons. |