The Itapurunga, Goiás State, Brazil (50º9' longitude W and 15º35' latitude S), meteorite was found at the farm of Curral de Pedra, located 18 km West from the city of Itapuranga. This iron, measuring 75x65x43 cm, exhibits shallow depressions and a dusty appearance on the surface. It weighs 628 kg and has an apparent density of 7.5. Kamacite and taenite are the major minerals, being tiny and irregular fragments of schreibersite (also rhabdite) less abundant. On the structural basis, Itapuranga is classified as a typical coarse octaedrite (bandwidth, 1.5 mm), which shows characteristic Widmanstatten plus Neumann lines when etched by acid. Chemical data (Ni, 6.6%; Ga, 96.9 ppm; Ge, 478 ppm; Ir, 2.8 ppm) allow to place it into the Group IA of the metal-rich meteorites. The main mass is on display at the Museum of the Institute of Geosciences, University of São Paulo, Brazil.
