Widmanstätten pattern

      lines that appear in some iron meteorites when a cross section of the meteorite is etched with weak acid. The pattern is named for Alois Josep Widmanstätten, a Viennese scientist who discovered it in 1808. 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. See also Neumann line.

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Universalium. 2010.

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  • Widmanstätten pattern — Widmanstätten patterns, called also Thomson structures, are unique figures of long nickel iron crystals, found in the octahedrite iron meteorites and some pallasites. They consist of a fine interleaving of kamacite and taenite bands or ribbons… …   Wikipedia

  • Count Alois von Beckh Widmanstätten — Widmanstätten pattern appears when an iron meteorite is etched with nitric acid Count Alois von Beckh Widmanstätten (July 13, 1753–June 10, 1849) was an Austrian printer and scientist. His name is sometimes given as Alois von Beckh Widmannstätten …   Wikipedia

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  • G. Thomson — (1760 – November 1806) was an English geologist. He died in Palermo at the early age of 46 yearsGian Battista Vai, W. Glen E. Caldwell. The origins of geology in Italy . Geological Society of America, 2006, ISBN 0813724112… …   Wikipedia

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  • meteorite — meteoritic /mee tee euh rit ik/, meteoritical, meteorital /mee tee euh ruyt l/, adj. /mee tee euh ruyt /, n. 1. a mass of stone or metal that has reached the earth from outer space; a fallen meteoroid. 2. a meteoroid. [1815 25; METEOR + ITE1] * * …   Universalium

  • Gibeon-Meteorit — Gibeon Meteoriten Nationales Denkmal in Namibia …   Deutsch Wikipedia

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