Gibeon meteorite for sale The Gibeon meteorites were discovered in a vast African desert close to Gibeon, Namibia in the early 1800's. The total fall of the Gibeon meteorites was approximately 150 tons of metal composed of 92% iron, and 7.5% nickel. Upon impact, the meteorite broke into countless smaller meteorites which were scattered over 200 square miles in Namibia. Gibeon is a metallic meteorite (treatment with acid causes patterns of Widmanstätten to appear on the surface). The crystalline pattern, is naturally occurring in outer space upon the cooling of iron and nickel in an environment with little to no gravity. These conditions cannot be recreated on earth due to the slow cooling rate, an estimated 1 degree Celsius in a million years.