This meteorite is from Gran Chaco Gualamba, Argentina approxiamtely 500 miles NW of Buenos Aries. It was found and recorded as early as 1576. This piece was found in 1988 it is an Iron Octahedrite 3.0 mm IA class. It has been tumbled and has little surface rust. It measures 1 3/16 x 1 x 1/2 inches or 30 x 25 x 12 mm and weighs 30.4 grams.