Meteoritical Bulletin: Entry for Northwest Africa 817
5 天之前 · Oxygen isotopes (M. Javoy and E. Petit, IPGP): ∆17 O = +0.4·. Specimens: 10 g, ENSL; main mass, Fectay. Photos uploaded by members of the Encyclopedia of Meteorites. …
A new Martian meteorite from Morocco: the nakhlite North …
2002年2月15日 · North West Africa (NWA 817) is a single stone of 104 g found in the Sahara (Morocco) by meteorite hunters in November 2000. The meteorite is an unbrecciated, medium …
这块火星陨石，它的一个证据首次直接证明火星上有液态水！ - 知乎
这块火星陨石，它的一个证据首次直接证明火星上有液态水！ NWA817. 火星陨石NWA 817-含橄榄石的累积单斜辉石（Nakhlite）， 历史上火星上有液态水的第一个直接证据！ 注：难免瑕疵， …
Signatures of early differentiation of Mars - ScienceDirect
2002年3月15日 · The SNC meteorites Chassigny, ALH84001, Nakhla, and the newly discovered nakhlite NWA817 contain high concentrations of xenon isotopes produced by the fission of the …
NWA817 has the most magnesian and Ca-rich composition in the core and zoned towards the Fe-rich, Ca-poor rims. These zoning profiles give the best fits for the cooling rates of 2.2 oC/hr for …
Astromaterials Acquisition & Curation Office
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aglassymatrix[7].NWA817,likethethreeother known nakhlites, shows no obvious shock fea-tures like melt pockets, high-pressure minerals or planar deformation features [8]. The NWA 817 …
NWA817 is a meteorite fragment of 104 g found in the Sahara (Morocco) by meteorite finder during one of his search campaigns in November 2000. The meteorite is an unbrecciated, …
Results: NWA 817 is an olivine-bearing clinopy-roxenite with a cumulate texture. The intercumulus mesosatasis is made of feldspars including minute amounts of sulfide droplets, Ti-magnetite …
Aqueous alteration in the Northwest Africa 817 (NWA 817) …
2002年10月15日 · Samples of a new Martian meteorite of the nakhlite family (NWA 817) contain traces of an iron-rich alteration product. Textural arguments indicate that this alteration product …