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Mineralogy and petrology of comet 81P/wild 2 nucleus samples

Zolensky, Michael; Zega, Thomas; Yano, Hajime; Wirick, Sue; Westphal, Andrew J; Weisberg, Mike; Weber, Iris; Warren, Jack; Velbel, Michael; Tsuchiyama, Akira; Tsou, Peter; Toppani, Alice; Tomioka, Naotaka; Tomeoka, Kazu; Teslich, Nick; Taheri, Mitra; Susini, Jean; Stroud, Rhonda; Stephan, Thomas; Stadermann, Frank J; Snead, Christopher J; Simon, Steven B; Simionovici, Alexandre; See, Thomas H; Robert, Francois; Rietmeijer, Frans J M; Rao, William; Perronnet, Murielle; Papanastassiou, Dimitri; Okudaira, Kyoko; Ohsumi, Kazumasa; Ohnishi, Ichiro; Nakamura-Messenger, Keiko; Nakamura, Tomoki; Mostefaoui, Smail; Mikouchi, Takashi; Meibom, Anders; Matrajt, Graciela; Marcus, Matthew A; Leroux, Hughues; Lemelle, Laurence; Le, Loan; Lanzirotti, A; Langenhorst, F; Krot, Alexander; Keller, Lindsay P; Kearsley, Anton T; Joswiak, David; Jacob, Damien; Ishii, Hope; Harvey, Ralph; Hagiya, Kenji; Grossman, L; Grossman, Jeffrey N; Graham, Giles A; Gounelle, Matthieu; Gillet, Phillipe; Genge, Matt; Flynn, George; Ferroir, T; Fallon, Stewart; Ebel, Denton S; Dai, Zurong; Cordier, Patrick; Clark, B. C.; Chi, Miaofang; Butterworth, Anna; Brownlee, Donald C; Bridges, John C; Brennan, Sean; Brearley, Adrian; Bradley, John P; Bleuet, Pierre; Bland, Phil; Bastien, Ron

Description

The bulk of the comet 81P/Wild 2 (hereafter Wild 2) samples returned to Earth by the Stardust spacecraft appear to be weakly constructed mixtures of nanometer-scale grains, with occasional much larger (over 1 micrometer) ferromagnesian silicates, Fe-Ni sulfides, Fe-Ni metal, and accessory phases. The very wide range of olivine and low-Ca pyroxene compositions in comet Wild 2 requires a wide range of formation conditions, probably reflecting very different formation locations in the...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
URI: http://hdl.handle.net/1885/37338
Source: Science
DOI: 10.1126/science.1135842

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