Neumann lines

 ( Meteorite Mineralogy And Petrology ) 

Neumann lines, or Neumann bands, are fine patterns of parallel lines seen in cross-sections of many hexahedrite in the kamacite phase, although they may appear also in octahedrites provided the kamacite phase is about 30 micrometres wide. They can be seen after a polished meteorite cross-section is treated with acid. The lines are indicative of a shock-induced deformation of the kamacite crystal, and are thought to be due to impact events on the parent body of the meteorite.O. Richard Norton, Rocks from Space, Mountain Press Pub., 1998, , page 195.

Neumann lines are named after who discovered them in 1848 in the hexahedrite meteorite which had fallen near Broumov (present-day Broumov, Czech Republic) in 1847.J. G. Burke: Cosmic Debris, Meteorites in History. University of California Press, 1986.

• Glossary of meteoritics
• Widmanstätten pattern