Complex sentence: It is a major constituent of iron meteorites (octahedrites and hexahedrites), where it is found in bands interleaving with taenite forming Widmanstätten patterns.
Split into simpler sentences: It is a major constituent of iron meteorites (octahedrite and hexahedrite types). In the octahedrites it is found in bands interleaving with taenite forming Widmanstätten patterns.