Campo del Cielo iron meteorite (3 pieces)

3 random small specimens 5-10 mm.

The Campo del Cielo impact is believed to have occurred approximately 5,000 years ago. The Campo scatter field is about 18 km long and includes at least 25 different craters. It is one of the larger known scatter fields on Earth and perhaps the largest crater field. It is also one of the largest impacts from which actual meteorite samples have been recovered. The heaviest weighs about 37 tons. Known as "El Chaco", it is considered a national treasure and remains in Argentina where it originally fell.

Another large mass, known as 'Otumpa' and weighing an estimated 1,000 kg (2,204 lbs), was discovered in 1803. Due to a shortage of earth iron, the mass was transported from Otumpa to Buenos Aires where attempts were made to weaponize it for use in the war against Spain.

Some of this iron was used to make the barrels of two pistols presented to US President James Monroe, but the bulk of it (now reduced to 634 kg) eventually made the long sea voyage to England, where it became the first major meteorite, on display in the British Museum in London.

Numerous additional masses have been found over the years, and Campo del Cielo has one of the longest and most interesting terrestrial histories of any iron meteorite. It is a polycrystalline, coarse octahedrite and specimens often show silicate-graphite-troilite inclusions.