Neumann lines, or Neumann bands, are fine patterns of parallel lines seen in cross-sections of many hexahedriteiron meteorites 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.[1]
Neumann lines[clarification needed] in an iron meteoriteIron meteorite showing relatively homegenous crystal formation with hexadedrite lamellae line, 1901
The lines are named after Johann G. Neumann,[citation needed] who discovered them in 1848 in the iron meteorite Braunau, a hexahedrite, which fell in 1847.[2][3]
^O. Richard Norton, Rocks from Space, Mountain Press Pub., 1998, ISBN978-0-87842-373-6, page 195.
^Johann G. Neumann: Ueber die krystallinische Struktur des Meteoreisens von Braunau. Naturwissenschaftliche Abhandlungen Wien 3 (1849) 45-56
^J. G. Burke: Cosmic Debris, Meteorites in History. University of California Press, 1986.
January 01, 1970
neumann, lines, neumann, bands, fine, patterns, parallel, lines, seen, cross, sections, many, hexahedrite, iron, meteorites, kamacite, phase, although, they, appear, also, octahedrites, provided, kamacite, phase, about, micrometres, wide, they, seen, after, po. Neumann lines or Neumann bands are fine patterns of parallel lines seen in cross sections of many hexahedrite iron meteorites 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 1 Neumann lines clarification needed in an iron meteorite Iron meteorite showing relatively homegenous crystal formation with hexadedrite lamellae line 1901 The lines are named after Johann G Neumann citation needed who discovered them in 1848 in the iron meteorite Braunau a hexahedrite which fell in 1847 2 3 See also editGlossary of meteoritics Widmanstatten patternReferences edit O Richard Norton Rocks from Space Mountain Press Pub 1998 ISBN 978 0 87842 373 6 page 195 Johann G Neumann Ueber die krystallinische Struktur des Meteoreisens von Braunau Naturwissenschaftliche Abhandlungen Wien 3 1849 45 56 J G Burke Cosmic Debris Meteorites in History University of California Press 1986 Retrieved from https en wikipedia org w index php title Neumann lines amp oldid 1167404043, wikipedia, wiki, book, books, library,
