Nantan Meteorite: Nickel-iron Iab-Mg, coarse octahedrite, found in a strewn field near the city of Nantan, China in 1958, 115g, about 6 x 3 x 1.5 cm. [There is evidence that the fall of the meteorite may have been observed in 1516; fragments were gathered for smelting in the 1950s; about 9500kg have been retrieved, the largest having a mass of 2000kg now housed in the National Museum of Nature and Science in Tokyo]