The Aletai Meteorite

The Aletai meteorite is a major iron meteorite discovered in the Altay region of Xinjiang, northwestern China.

Its name derives from the Aletai (Altay) region where numerous masses have been recovered over a vast area.

Aletai belongs among the great iron meteorites of the world and is particularly famous for the enormous size of some recovered masses.

Classification and Composition

Aletai is classified as a coarse octahedrite iron meteorite, composed primarily of iron-nickel metal containing kamacite and taenite.

When cut, polished, and etched, these metallic structures reveal spectacular Widmanstätten patterns produced by extremely slow cooling within the metallic core of an ancient differentiated asteroid.

The large crystal structure of Aletai often produces exceptionally aesthetic etched slices highly appreciated by collectors and museums.

Widmanstätten Patterns

The etched structures visible in Aletai slices are known as Widmanstätten patterns.

These interlocking metallic crystals formed over millions of years during the extremely slow cooling of the parent asteroid’s metallic core.

Such structures cannot be artificially reproduced on Earth and remain one of the defining characteristics of iron meteorites.

Large etched Aletai slices reveal spectacular Widmanstätten crystalline structures.

Large Museum-Class Slices

Aletai is particularly famous for allowing the preparation of very large complete slices.

These museum-class sections provide extraordinary visual displays of extraterrestrial metallic crystallization and are highly valued for:

• Large display dimensions
• Beautiful etched structures
• Excellent stability
• Strong decorative and scientific appeal

Some Aletai slices rank among the largest and most impressive iron meteorite displays available on the collector market.

Atmospheric Features

Complete Aletai individuals may preserve atmospheric sculpting features including:

• Regmaglypts
• Flow structures
• Fusion crust remnants
• Ablation textures

However, Aletai is especially prized for its cut and etched sections rather than sculptural complete individuals.

Scientific Importance

Aletai provides important information concerning:

• Planetary differentiation
• Metallic asteroid core formation
• Iron meteorite cooling histories
• Nickel-iron crystallization processes

Its large preserved masses offer valuable material for both scientific study and museum exhibition.

Collector Interest

Aletai meteorites are highly appreciated by collectors seeking large etched iron meteorite slices with strong visual impact.

Collectors particularly value:

• Large complete etched slices
• Well-developed Widmanstätten patterns
• Stable metallic structure
• Museum-scale presentation pieces

The combination of size, structural beauty, and extraterrestrial origin makes Aletai one of the most visually impressive iron meteorites available.

Available Specimens

The specimens presented in this category include selected Aletai meteorites ranging from etched slices to complete individuals and museum-class display pieces.

FAQ

What is the Aletai meteorite?

Aletai is a large iron meteorite discovered in the Xinjiang region of China.

Why is Aletai famous?

Aletai is renowned for its enormous masses and spectacular etched Widmanstätten patterns.

What type of meteorite is Aletai?

Aletai is a coarse octahedrite iron meteorite.

What are Widmanstätten patterns?

They are interlocking metallic crystal structures formed during extremely slow cooling inside asteroid cores.

Are large Aletai slices rare?

Yes. Large complete etched slices with aesthetic crystalline structures are highly sought after by collectors and museums.