
Age and Petrogenesis of Picritic Shergottite NWA1068: Sm-Nd …
2003年1月1日 · NWA 1068 is a 577g picritic shergottite found in the Moroccan Sahara in 2001. The meteorite resembles several other picritic shergottites, e.g. EETA79001B, DaG476, SaU005 and Dho019, in major-element chemistry and mineralogy, but it differs significantly from these meteorites in REE distribution pattern.
Meteoritical Bulletin: Entry for Northwest Africa 1068
2025年3月17日 · In 2001 April, meteorite hunters of the local team of "La Mémoire de la Terre" recovered 23 stones (one large mass, 522 g, and 22 small fragments, <20 g; total known mass, 576.77 g) in the Moroccan Sahara. Rocks are greenish-brown and partially coated by desert varnish; no fusion crust; cracks filled with terrestrial calcium carbonate.
NWA1068 (credit Jean-Alix Barrat and Marcel Bohn). This is figure 8 in Barrat et al. GCA 66, 3512. Figure 5b: Pyroxene and olivine composition diagram for NWA 1110 (data from Papike et al. 2012). Sr, Ba and Pb are relatively high compared with unweathered shergottites (figure 4), but Th/U is normal and NWA 1068 does not have a Ce anomaly, so it has
Petrology and chemistry of the Picritic Shergottite North West Africa ...
2002年10月1日 · We report on the petrology and chemistry of North West Africa 1068 (NWA 1068), a shergottite recently recovered in Morocco. This meteorite has a total known mass of about 577 g and comprises 23 fragments. The largest fragment is a …
The age of the martian meteorite Northwest Africa 1195 and …
2008年3月15日 · A suite of meteorites with essentially flat REE patterns and/or radiogenic initial Sr and unradiogenic initial Nd isotopic compositions include NWA1068/1110, NWA856, Los Angeles, Zagami, and Shergotty.
NWA1068 is a significant specimen as it is the only olivine-phyric shergottite that is not LREE depleted, having an REE pattern [5], Sm-Nd and Rb-Sr isotopic systematics [6], and fO2 [7] similar to Shergotty.
Insights into the redox history of the NWA 1068/1110 martian …
2006年10月1日 · The NWA 1068/1110 martian meteorite contains megacrystic olivine and associated chromite set in a basaltic groundmass of pyroxene, maskelynite (shock-isotropized plagioclase), phosphates, ilmenite, and ulvöspinel. Spinel is compositionally zoned from chromian cores to titanian rims, and lacks the chromite-ulvöspinel miscibility gap.
Experimental petrology, crystallization history, and parental …
Abstract– Northwest Africa (NWA) 1068 is one of the few olivine-phyric shergottites (e.g., NWA 1068, Larkman Nunatak [LAR] 06319, and Roberts Massif [RBT] 04262) that is not depleted in light rare earth elements (LREE).
Astromaterials Acquisition & Curation Office
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NWA 1068 (SNC - Shergottite) - Unusual Inclusion - Meteorites
NWA 1068 was found in the Sahara Desert during April 2001 and was classified as one of the rare SNC Martian meteorites. Specifically, it is a Basaltic Shergottite with a Total Known Weight of 576.77g. However, since this initial find, many other paired fragments have been found and classified under different NWA numbers.
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