*지구에 떨어진년도: 방사선 나이측정결과 약 4000~6000년전에 떨어진것으로 알려져있으며, 운석이 나이는 1500만년전으로 알려져있음.
*캄포델시엘로 History 영문원본입니다 : In 1576, the governor of a province in Northern Argentina commissioned the military to search for a huge mass of iron, which he had heard that Natives used for their weapons. The Natives claimed that the mass had fallen from the sky in a place they called Piguem Nonralta which the Spanish translated as Campo del Cielo ("Field of the Sky"). The expedition found a large mass of metal protruding out of the soil. They assumed it was an iron mine and rought back a few samples, which were described as being of unusual purity. The governor documented the expedition and deposited the report in the Archivo General de Indias in Seville, but it was quickly forgotten and later reports on that area merely repeated the Native legends. Following the legends, in 1774 don Bartolome Francisco de Maguna rediscovered the iron mass which he called el Meson de Fierro ("the Table of Iron").Maguna thought the mass was the tip of an iron vein. The next expedition, led by Rubin de Celis in 1783, used explosives to clear the ground around the mass and found that it was probably a single stone.Celis estimated its mass as 15 tonnes and abandoned it as worthless. He himself did not believe that the stone had fallen from the sky and assumed that it had formed by a volcanic eruption. However, he sent the samples to the Royal Society of London and published his report in the Philosophical Transactions of the Royal Society. Those samples were later analyzed and found to contain 90% iron and 10% nickel and assigned to a meteoritic origin. Later, many iron pieces were found in the area weighing from a few milligrams to 34 tonnes. A mass of about 1 tonne known as Otumpa was located in 1803. A 634 kilograms (1,398 lb) portion of this mass was taken to Buenos Aires in 1813 and later donated to the British Museum. Other large fragments are summarized in the table below. The mass called el Taco was originally 3,070 kilograms (6,770 lb), but the largest remaining fragment weighs 1,998 kilograms (4,405 lb). The largest mass of 37 tonnes was located in 1969 at a depth of 5 m using a metal detector.
This stone, named El Chaco, is the second heaviest single-piece meteorite after the Hoba meteorite (Namibia) which weighs 60 tonnes. However, the total mass of the Campo del Cielo fragments found so far exceeds 60 tonnes, making it the heaviest meteorite ever recovered on Earth.
In 1990 a local Argentinean highway police officer foiled a plot by Robert Haag to steal El Chaco. The stone had already been moved out of the country, but was returned to Campo del Cielo and is now protected by a provincial law.
운석임을 증명하는 기본적인 방법중에는 철운석 특유의 위드만스테텐 패턴 무늬로 진품운석임을 증명할 수 있습니다
또는 거의 모든 운석에는 니켈성분이 함유되어 있는데, 그 니켈 성분으로 "니켈테스트"를 통해 진품운석임을 알 수 있습니다.
캄포델시엘로는 잘라서 부식을 시키면 아래와 같은 "위드만스테텐" 이라 불리우는 무늬를 보실 수 있습니다.
다만 그 무늬의 굵기가 3.0mm 으로 굵기때문에 작은 운석에서는 잘 표현되지 않을 수 있습니다.