View source for Chassigny (meteorite)

{{Short description|1815 meteorite impact in north-eastern France}}
{{Infobox meteorite
|Name                      = Chassigny meteorite
|Alternative names         =
|Image                     = Chas3.jpg
|Image_caption             = Thin section of Chassigny under cross-polarized light (JPL)
|Type                      = [[Achondrite]]
|Class                     = [[Martian meteorite]]
|Group                     = [[Chassignite]]
|Structural_classification = 
|Parent body               = [[Mars]]
|Composition               = 
|Shock                     = 
|Weathering                = 
|Country                   = [[France]]
|Region                    = [[Chassigny, Haute-Marne]]
|Lat_Long                  = {{coord|47|43|N|5|23|E|display=inline,title}}<ref name=metbulldb>{{metbull|5331|Chassigny}}</ref>
|Observed_fall             = 
|Fall_date                 = 1815-10-03
|Found_date                = 
|TKW                      = 
|Image2                    = 
|Image2_caption            = 
}}
'''Chassigny''' is a [[Martian meteorite]] which fell on October 3, 1815, at approximately 8:00 am, in [[Chassigny, Haute-Marne|Chassigny]], north-eastern France.<ref name="circumstances">Pistollet (1816) The circumstances of the Chassigny meteorite shower. Ann. Chim. Phys. (Paris) v. 1, pg 45-48.</ref><ref>[http://www2.jpl.nasa.gov/snc/chassigny.html "The Chassigny Meteorite"] - From [[NASA]]'s [[Jet Propulsion Laboratory]], stating it is the only example. URL accessed September 6, 2006.</ref> Chassigny is the meteorite for which the chassignites are named and gives rise to the "C" in the name of the [[SNC Meteorites|SNC group]] of meteorites. Chassigny is an olivine [[cumulate rock]] ([[dunite]]). It consists almost entirely of [[olivine]] with intercumulus [[pyroxene]], [[feldspar]], and oxides. It was the only known chassignite until NWA2737 was found in the Moroccan Sahara in northwest Africa.<ref>Beck P., Barret J. A., Gillet P., Franchi I.A., Greenwood R. C., Van De Moortele B., Reyard B., Bohn M. and Cotton J. (2005) [http://www.lpi.usra.edu/meetings/lpsc2005/pdf/1326.pdf The Diderot Meteorite, the second chassignite.]''Lunar and Planet. Sci. XXXVI'', Abstract #1326.</ref>
[[File:Chassigny meteorite.jpg|thumb|Mars meteorite rock, in Vienna science Museum.]]
Chassigny is particularly important because, unlike most SNCs, its [[noble gas]] composition differs from that in the current [[Atmosphere of Mars|Martian atmosphere]]. These differences are presumably due to its cumulate (mantle-derived) nature.<ref>[http://www-curator.jsc.nasa.gov/antmet/mmc/Chassig.pdf Mars Meteorite Compendium: Chassigny], Compiled by Charles Meyer.</ref>

== See also ==
* [[Glossary of meteoritics]]
* [[Meteorite falls]]

== References ==
{{Reflist}}
{{Meteorites}}
{{Meteorites by name}}
{{Mars}}
{{Portal bar|Solar System}}

[[Category:Martian meteorites]]
[[Category:1815 in France]]
[[Category:Haute-Marne]]
[[Category:1815 in science]]
[[Category:Meteorites found in France]]
[[Category:October 1815]]