The etched sections display a beautiful mix of a very thick Widmanstätten pattern and apparently equiaxial kamacite grains. The kamacite lamellae are very short and bulky and have a width of 5 ± 2 mm. The oriented lamellae structure is not pronounced because significant amounts of kamacite were developed around numerous eutectic schreibersite-metal-troilite before the Widmanstätten pattern could grow. Eutectic, including kamacite, cover - on average - 30% of available sections. The interfaces between the swathing and the lamellar kamacite areas are ragged because some late grain boundary adjustment has taken place the grain boundaries. It is always the swathing kamacite that has expanded at the expense of the widmanstiitten pattern. The kamacite has well-developed sub-borders, decorated by 1-2 µm thick rhabdites . Neumann lines are common, some of them being decorated by rows of 1-2 µm thick rhabdites. The hardness is 175±8, decreasing to 150±5 in the nickel- and phosphorus-depleted a-zones around schreibersite. Taenite and plessite cover less than I% by area, mostly situated in the grain boundaries but occasionally completely embedded within one uniformly oriented swathing kamacite grain. The comb plessite attains sizes of 3 x 2 mm and it exhibits pearlitic, spheroidized and martensitic areas. Schreibersite is the essential component of the eutectics where it forms 1-5 mm wide, winding ribbons with an occasional crystallographic facet. Its hardness is 925±25. Chromite is locally present as 0.5-1 mm wide euhedral cubes with rounded faces. Schreibersite is further common as 20-200µm wide grain boundary veinlets. Rhabdites are very common, perhaps mairliy as 0.5-2µm thick prisms in the kamacite interior. The Neumann lines are narrow, 0.5-1 µm, in the rhabdite-loaded areas but are as wide as 10µm in the rhabdite-free zones near schreibersite. Troilite forms long subparallel stringers and irregular plates through the whole mass. The exposed surface of the main mass in Rio de Janeiro (Vidal 1931: 20) clearly shows that the sulfide is oriented parallel to the topside and underside of the main mass, thus suggesting a mild hot working with compression and some shearing. The texture suggests that the mass was deformed during slight movements of the overburden on the parent asteroid. Source: Buchwald (1975).