Aletai Meteorite – Elongated Anomalous IIIE Iron Specimen

This 24-gram Aletai meteorite has an elongated, low-profile form with a flowing arrangement of natural metallic structures. Its surfaces display layered ridges, darker recessed areas and contrasting raised sections that create considerable depth across the specimen. The unusual horizontal profile gives this individual piece a distinctive character, with interesting textures revealed from every angle.

Specimen Details

✓ Meteorite Type: Anomalous IIIE Iron Meteorite (Coarse Octahedrite)
✓ Composition: Kamacite, Taenite & Plessite, with elevated Cobalt, Gold & Iridium
✓ Accessory Minerals: Schreibersite, Troilite, Cohenite, Haxonite & Daubréelite
✓ Strewn Field: More than 430 km — the largest recorded on Earth
✓ Total Recovered Mass: More than 74 tonnes
✓ Fall Location: Northern Xinjiang, Altay Prefecture, China
✓ First Identified: 1898, originally catalogued as Armanty
✓ Formal Name: Aletai, adopted in 2016
✓ Specimen Size: ≈34mm wide × 26mm deep × 14mm high
✓ Weight: 24g

The History of the Aletai Meteorite

The Aletai meteorite holds a remarkable distinction in meteorite history: its strewn field extends for more than 430 kilometres, making it the largest meteorite debris field ever recorded on Earth.

Scientists believe this extraordinary dispersal may have resulted from a highly unusual atmospheric trajectory. The incoming meteorite is thought to have entered Earth's atmosphere at a shallow angle, potentially skipping through the upper atmosphere like a stone across water before re-entering and eventually breaking apart over Northern Xinjiang.

This unusual journey also helps explain why the meteorite was not initially recognised as one enormous fall. Fragments recovered from different parts of the vast strewn field were catalogued separately for decades under names including Armanty, Xinjiang and Ulasitai. Chemical and mineralogical studies eventually established that these materials shared a common origin, and in 2016 the known material was formally named Aletai, after the Altay Prefecture of China.

Aletai is classified as an anomalous IIIE iron meteorite and coarse octahedrite, distinguished by its unusual chemistry and a Widmanstätten pattern unlike other known IIIE irons. Its chemistry includes elevated concentrations of elements such as cobalt, gold and iridium. With a total recovered mass exceeding 74 tonnes, Aletai represents an extraordinary meteorite event and one of the most fascinating iron meteorites available to collectors.

Own an Elongated Fragment of the Aletai Fall

Its unusual elongated form makes this 24-gram Aletai immediately distinctive. Add this characterful fragment to your collection and own a piece of the world's largest recorded meteorite strewn field — an extraordinary reminder of an event that began far beyond Earth.