Muonionalusta ~ Sweden

Name: Muonionalusta
Type: Iron, IVA
Classification: Octahedrite, fine (0.3 mm) shock-hatched kamacite structure
Country: Sweden
Region: Kiruna, Norrbotten
Observed fall: No
Year found: 1906

This meteorite displays the Widmanstätten pattern when a cross section is etched with a weak acid. It represents a section through a three-dimensional octahedral structure in the metal that is formed of bands of kamacite with narrower borders of taenite, the meshes being filled with a mixture of these two alloys.