What is "chassigny"

Chassigny is a Mars meteorite which fell on October 3, 1815, at approximately 8:00 am, in Chassigny, Haute-Marne, France. Chassigny is the meteorite for which the chassignites are named, and gives rise to the "C" in SNCs. Chassigny is an olivine cumulate rock ( dunite). It consists almost entirely of olivine with intercumulous pyroxene, feldspar, and oxides. Chassigny was the only known chassignite until NWA2737 was found in the Moroccan Sahara in northwest Africa. Chassigny is particularly important because, unlike most SNCs, it contains noble gas compositions different from the current Martian atmosphere. These differences are presumably due to its cumulate (mantle-derived) nature.

Chassigny may refer to:

• Chassigny (meteorite), a martian meteorite fell in 1815 in France
• Chassigny, Haute-Marne, a village and commune in the Haute-Marne département of north-eastern France
• Chassigny-sous-Dun, a commune in the Saône-et-Loire département of central France