Campo del Cielo meteorite Iron-Nickel with Widmanstätten...

Iron-Nickel with Widmanstätten Structure — The Campo del Cielo meteorite is a ferrous meteorite (IAB-MG class) discovered in Argentina, in the province of Chaco, in an area known for the fall of meteor fragments estimated between 4,000 and 5,000 years ago. The region is named "Campo del Cielo" ("field of heaven" in Spanish) due to local legends telling of "sky fragments fallen to Earth". Iron (Fe): ~92% Nickel (Ni): ~6-7% Traces of cobalt (Co), phosphorus (P), gallium (Ga), germanium (Ge) and iridium (Ir) Kamacite (iron-nickel alloy with low nickel content) Taenite (iron-nickel alloy with high nickel content) Troilite (iron sulfide) Graphite and schreibersite (iron-nickel phosphide, rare) The meteorite presents a rough and irregular surface, typical of the fusion crust formed during descent through the atmosphere. Some polished sections can reveal the classic Widmanstätten structure, characteristic of ferrous meteorites, which manifests as bands of iron-nickel alloy crystallized slowly in space over millions of years. Cosmic age: ~4.5 billion years (formation) Fall date: About 4,000-5,000 years ago Isotopic analysis of the meteorite has provided information about the formation of the Solar System. This Campo del Cielo specimen represents a fragment of the universe, a testimony to the birth of the Solar System and the history of ferrous meteorites that have traveled for millions of years before landing on Earth. Its raw, metallic appearance, together with the internal Widmanstätten structure, makes it a fascinating piece for collectors and enthusiasts of mineralogy and astrophysics.

Estimation:€150

Voir tous les objets deCatawikiouEthnographie