A Widmanstätten pattern (VID-man-shtay-tin), also known as a Thomson structure, is a figure of long phases of nickel–iron, found in the octahedrite shapes of iron meteorite crystals and some pallasites. Iron meteorites are very often formed from a single crystal of iron-nickel alloy, or sometimes several large crystals that may be many meters in size, and often lack any discernible crystal boundary on the surface.
A Widmanstätten pattern (VID-man-shtay-tin), also known as a Thomson structure, is a figure of long phases of nickel–iron, found in the octahedrite shapes of iron meteorite crystals and some pallasites. Iron meteorites are very often formed from a single crystal of iron-nickel alloy, or sometimes several large crystals that may be many meters in size, and often lack any discernible crystal boundary on the surface.
Source: Wikipedia "Widmanstätten pattern" · CC BY-SA 4.0
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