This 930 g full slice of the Seymchan pallasite presents an expansive and highly detailed composition, where a dense network of golden olivine crystals is set within a finely structured iron-nickel matrix. The large format enhances the readability of both the silicate distribution and the Widmanstätten pattern, offering a striking balance between scientific clarity and visual impact.
This exceptional 930 g Seymchan pallasite slice, measuring 430 × 300 × 3 mm, stands out for both its scale and the richness of its internal structure.
The surface reveals a dense and finely distributed mosaic of olivine crystals, displaying a wide range of tones from deep amber to bright golden yellow. These translucent silicates are tightly embedded within the metallic framework, creating a complex and almost continuous visual texture across the entire slice.
The iron-nickel matrix, carefully prepared and etched, displays well-developed Widmanstätten patterns, formed through extremely slow cooling within the parent asteroid—on the order of a few degrees per million years. These geometric structures provide direct evidence of the thermal history of the body from which this meteorite originated.
What distinguishes this specimen is the balance between density and legibility: the olivines are abundant yet individually discernible, allowing both a global appreciation of the slice and a detailed examination of its mineralogical components.
The preparation quality is of a high standard, with a clean, well-polished surface that enhances both the transparency of the olivines and the contrast within the metallic phase. The large format further amplifies this effect, making the piece particularly suitable for display.
This slice is ideally suited for advanced collectors, exhibition purposes, or scientific presentation, offering a comprehensive and visually compelling representation of a pallasitic structure.
Seymchan is a unique meteorite classified as both an iron meteorite and a pallasite, depending on the sampled region. Its pallasitic portions contain olivine crystals embedded within an iron-nickel matrix, originating from the boundary between the core and mantle of a differentiated asteroid.
The Widmanstätten patterns visible in the metallic phase are the result of extremely slow cooling processes in space, making them a key feature for both scientific study and aesthetic appreciation.
Large, complete slices combining significant size, dense olivine distribution, and well-defined structural patterns are relatively uncommon and highly valued among collectors.
