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Chassigny es un meteorito marciano que cayó el 3 de octubre de 1815, aproximadamente a las 8:00 a. m., en Chassigny, Alto Marne, Francia. [1] [2] Chassigny es una roca acumulada de olivino . Consiste casi completamente en olivino con piroxeno, feldespato y óxidos.
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. [4] Mars meteorite rock, in Vienna science Museum.
- History
- Subdivision
- Origin
- Possible Evidence of Life
- See Also
- External Links
By the early 1980s, it was obvious that the SNC group of meteorites (Shergottites, Nakhlites, and Chassignites) were significantly different from most other meteorite types. Among these differences were younger formation ages, a different oxygen isotopic composition, the presence of aqueous weathering products, and some similarity in chemical compo...
As of April 25, 2018, 192 of the 207 Martian meteorites are divided into three rare groups of achondritic (stony) meteorites: shergottites (169), nakhlites (20), chassignites (3), and ones otherwise (15) (containing the orthopyroxenite (OPX) Allan Hills 84001, as well as 10 basaltic breccia meteorites). Consequently, Martian meteorites as a whole a...
The majority of SNC meteorites are quite young compared to most other meteorites and seem to imply that volcanic activity was present on Mars only a few hundred million years ago. The young formation ages of Martian meteorites was one of the early recognized characteristics that suggested their origin from a planetary body such as Mars. Among Marti...
Several Martian meteorites have been found to contain what some think is evidence for fossilized Martian life forms. The most significant of these is a meteorite found in the Allan Hills of Antarctica (ALH 84001). Ejection from Mars seems to have taken place about 16 million years ago. Arrival on Earth was about 13 000 years ago. Cracks in the rock...
Enciclopedia Libre Universal en Español (English: Universal Free Encyclopedia in Spanish) is a Spanish-language wiki-based online encyclopedia, released under the Creative Commons Attribution-ShareAlike License 3.0. It uses the MediaWiki software. It started as a fork of the Spanish Wikipedia.
Chassignite (also known as olivine achondrite) is an olivine-rich rock that resembles lunar and terrestrial dunites in texture and general mineral composition, but contains olivine of higher iron content.
Chassigny, a meteorite which fell on 3 October 1815 is remarkable for two particularly important reasons. First, it is an unusual nearly monomineralic rock, a dunite, composed primarily of the mineral olivine (≥90 vol%).
Amorce Meteorite Museum. History: In August 2000, meteorite collectors discovered a stone fragmented into nine pieces (308 g, 128 g, 74 g, 47 g, 38 g, 6.4 g, 3.3 g, 2.0 g, and 4.3 g for a total mass of 611 g) in the western part of the Sahara. Petrography and Geochemistry: (P. Beck, Ph.
