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2470 grams.   Iron, ungroupedFall not observed. Found 1988 in Antarctica.
Location Map of Antarctic Finds



AMN writes:

Macroscopic Description - V.F. Buchwald and R.S. Clarke. Jr.

The meteorite was found by a research group under the direction of Dr. Charles Swithinbank on the blue ice field at Mt. Howe, Antarctica. It is blocky in shape with smoothly rounded edges, and its surfaces are dark brown in color with a slightly reddish tinge. The surface is unusual in appearance, having a texture of densely spaced pin holes due to selective corrosion and interior structure. Flow structure is present in the fusion crust suggesting that the domed or most rounded surface was the anterior surface during atmospheric entry.

Thin Section Description - V.F. Buchwald and R.S. Clarke. Jr.

A polished section of 20 cm2 was prepared from a slice that was taken perpendicular to the long axis of the specimen and ~15 mm from its smaller end. The appearance of this surface suggests a metal-sulfide eutectic, with ~2/3 metal and ~1/3 sulfide. It is a fine grained structure with individual sulfide cells ranging around 0.3 mm across. A thin fusion crust is present, underlain by a 2-3 mm heat-altered zone. The metal matrix is ataxitic, decomposing into a very fine grained mixture of taenite and kamacite with abundant small schreibersites. Troilite is surrounded by discontinuous rims of schreibersite, and an occasional chromite was observed in the sulfide. The specimen is an anomalous sulfide-rich ataxite.