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

M.E. Zolensky; T.J. Zega; H. Yano; S. Wirick; A.J. Westphal; M.K. Weisberg; I. Weber; J.L. Warren; M.A. Velbel; A. Tsuchiyama; P. Tsou; A. Toppani; N. Tomioka; K. Tomeoka; N. Teslich; M. Taheri; J. Susini; R. Stroud; T. Stephan; F.J. Stadermann; C.J. Snead; S.B. Simon; A. Simionovici; T.H. See; F. Robert; F.J.M. Rietmeijer; W. Rao; M.C. Perronnet; D.A. Papanastassiou; K. Okudaira; K. Ohsumi; I. Ohnishi; K. Nakamura-Messenger; T. Nakamura; S. Mostefaoui; T. Mikouchi; A. Meibom; G. Matrajt; M.A. Marcus; H. Leroux; L. Lemelle; L. Le; A. Lanzirotti; F. Langenhorst; A.N. Krot; L.P. Keller; A.T. Kearsley; D. Joswiak; D. Jacob; H. Ishii; R. Harvey; K. Hagiya; L. Grossman; J.H. Grossman; G.A. Graham; M. Gounalle; P. Gillet; M.J. Genge; G. Flynn; T. Ferroir; S. Fallon; D.S. Ebel; Z.R. Dai; P. Cordier; B. Clark; M. Chi; Anna L. Butterworth; D.E. Brownlee; J.C. Bridges; S. Brennan; A. Brearley; J.P. Bradley; P. Bleuet; P.A. Bland; R. Bastien

doi:10.1126/science.1135842

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

Science

By: M.E. Zolensky, T.J. Zega, H. Yano, S. Wirick, A.J. Westphal, M.K. Weisberg, I. Weber, J.L. Warren, M.A. Velbel, A. Tsuchiyama, P. Tsou, A. Toppani, N. Tomioka, K. Tomeoka, N. Teslich, M. Taheri, J. Susini, R. Stroud, T. Stephan, F.J. Stadermann, C.J. Snead, S.B. Simon, A. Simionovici, T.H. See, F. Robert, F.J.M. Rietmeijer, W. Rao, M.C. Perronnet, D.A. Papanastassiou, K. Okudaira, K. Ohsumi, I. Ohnishi, K. Nakamura-Messenger, T. Nakamura, S. Mostefaoui, T. Mikouchi, A. Meibom, G. Matrajt, M.A. Marcus, H. Leroux, L. Lemelle, L. Le, A. Lanzirotti, F. Langenhorst, A.N. Krot, L.P. Keller, A.T. Kearsley, D. Joswiak, D. Jacob, H. Ishii, R. Harvey, K. Hagiya, L. Grossman, J.H. Grossman, G.A. Graham, M. Gounalle, P. Gillet, M.J. Genge, G. Flynn, T. Ferroir, S. Fallon, D.S. Ebel, Z.R. Dai, P. Cordier, B. Clark, M. Chi, Anna L. Butterworth, D.E. Brownlee, J.C. Bridges, S. Brennan, A. Brearley, J.P. Bradley, P. Bleuet, P.A. Bland, and R. Bastien

https://doi.org/10.1126/science.1135842

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Abstract

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 protoplanetary disk. The restricted compositional ranges of Fe-Ni sulfides, the wide range for silicates, and the absence of hydrous phases indicate that comet Wild 2 experienced little or no aqueous alteration. Less abundant Wild 2 materials include a refractory particle, whose presence appears to require radial transport in the early protoplanetary disk.

Suggested Citation

Zolensky, M., Zega, T., Yano, H., Wirick, S., Westphal, A., Weisberg, M., Weber, I., Warren, J., Velbel, M., Tsuchiyama, A., Tsou, P., Toppani, A., Tomioka, N., Tomeoka, K., Teslich, N., Taheri, M., Susini, J., Stroud, R., Stephan, T., Stadermann, F., Snead, C., Simon, S., Simionovici, A., See, T., Robert, F., Rietmeijer, F., Rao, W., Perronnet, M., Papanastassiou, D., Okudaira, K., Ohsumi, K., Ohnishi, I., Nakamura-Messenger, K., Nakamura, T., Mostefaoui, S., Mikouchi, T., Meibom, A., Matrajt, G., Marcus, M., Leroux, H., Lemelle, L., Le, L., Lanzirotti, A., Langenhorst, F., Krot, A., Keller, L., Kearsley, A., Joswiak, D., Jacob, D., Ishii, H., Harvey, R., Hagiya, K., Grossman, L., Grossman, J., Graham, G., Gounalle, M., Gillet, P., Genge, M., Flynn, G., Ferroir, T., Fallon, S., Ebel, D., Dai, Z., Cordier, P., Clark, B., Chi, M., Butterworth, A.L., Brownlee, D., Bridges, J., Brennan, S., Brearley, A., Bradley, J., Bleuet, P., Bland, P., and Bastien, R., 2006, Mineralogy and petrology of comet 81P/wild 2 nucleus samples: Science, v. 314, no. 5806, p. 1735-1739, https://doi.org/10.1126/science.1135842.

Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Mineralogy and petrology of comet 81P/wild 2 nucleus samples
Series title	Science
DOI	10.1126/science.1135842
Volume	314
Issue	5806
Year Published	2006
Language	English
Larger Work Type	Article
Larger Work Subtype	Journal Article
Larger Work Title	Science
First page	1735
Last page	1739