Igneous Ca-rich pyroxene in comet 81P/Wild 2

American Mineralogist

Volumn 93, Issue 11-12, 2008, Pages 1933-1936

  Leroux, Hugues ^a   Jacob, Damien ^a   Stodolna, Julien ^a   Nakamura Messenger, Keiko ^b   Zolensky, Michael E ^b  

^a UNIV LILLE   (France)

^b NASA JOHNSON SPACE CENTER   (United States)

Author keywords

Comet dust; Electron microscopy; Phase transformation; Pyroxene; Stardust

Indexed keywords

ASTEROIDS; DUST; ELECTRON MICROSCOPY; HIGH RESOLUTION TRANSMISSION ELECTRON MICROSCOPY; NANOCRYSTALLINE MATERIALS; PHASE TRANSITIONS; SILICATE MINERALS;

CHONDRITIC METEORITES; COMET DUSTS; CRYSTALLINE SILICATES; EARLY SOLAR SYSTEMS; PROTOPLANETARY DISKS; PYROXENE; STARDUST; STARDUST SPACECRAFT;

IGNEOUS ROCKS;

CALCIUM; CHONDRITE; COMET; CRYSTAL STRUCTURE; IGNEOUS ROCK; MICROSTRUCTURE; PHASE TRANSITION; PYROXENE; TRANSMISSION ELECTRON MICROSCOPY;

EID: 58049113960     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am.2008.3048     Document Type: Article

References (34)

1. Brown, M.E., Barkume, K.M., Ragozzine, D., and Schaller, E.L. (2007) A collisional family of icy objects in the Kuiper belt. Nature, 446, 294-296.
2. Brownlee, D. and others (2006) Comet 81P(Wild 2 under a microscope. Science, 314, 1711-1716.
3. Brownlee, D.E., Joswiak, D.J., Matrajt, G., Bradley, J.P., and Ebel, D.S. (2008) Ultra-refractory attogram inclusions in comet dust - First condensates? Proceedings of the 39th Lunar and Planetary Science Conference, p. 1978. Lunar and Planetary Institute, Houston, Texas.
4. 6 at atmospheric pressure. American Mineralogist, 73, 232-241.
5. Champness, P.E. and Lorimer, G.W. (1971) An electron microscopic study of a lunar pyroxene. Contributions to Mineralogy and Petrology, 33, 171-183.
6. Crovisier, J., Leech, K., Bockelée-Morvan, D., Brooke, T.Y., Banner, M.S., Altieri, B., Keller, H.U., and Lellouch, E. (1997) The spectrum of Comet Hale-Bopp (C/1995 01) observed with the Infrared Space Observatory at 2.9 AU from the Sun. Science, 275, 1904-1907.
7. Grove, T.L. (1982) Use of exsolution lamellac in lunar clinopyroxenes as cooling rate speedometers: An experimental calibration. American Mineralogist, 67, 251-268.
8. Ishii, H.A., Bradley, J.P., Dai, Z.R., Chi, M., Kearsley, A.T., Burchell, M.J., Browning, N.D., and Moister, F. (2008) Comparison of Comet 81P/Wild 2 dust with interplanetary dust from comets. Science, 319, 447-450.
9. Jantzen, C.M. (1994) On spinodal decomposition in Fe-free pyroxenes. American Mineralogist, 69, 277-282.
10. Joswiak, D.J., Matrajt, G., Brownlee, D.E., Westphal, A.J., and Snead, C.J. (2007) A Roedderite-Bearing Terminal Particle from Stardust Track 56: Comparison with Rare Peralkaline Chondrules in Ordinary Chondrites. Proceedings of the 38th Lunar and Planetary Science Conference, p. 2142. Lunar and Planetary Institute, Houston, Texas.
11. Kemper, F., Vriend, W.J., and Tielens, A.G.G.M. (2004) The absence of crystalline silicates in the diffuse interstellar medium. The Astrophysical Journal, 609, 826-837.
12. Lally, J.S., Heuer, A.H., Nord Jr., G.L., and Christie, J.M. (1975) Subsolidus reactions in lunar pyroxenes: An electron petrographic study. Contributions to Mineralogy and Petrology, 51, 263-281.
13. Leroux, H., Devouard, B., Cordier, P., and Guyot, F. (2004) Pyroxene microstructure in the North West Africa 856 Martian meteorite. Meteoritics and Planetary Science, 39, 711-722.
14. Leroux, H., Rietmeijer, F.J.M., Velbel, M.A., Brearley, A.J., Jacob, D., Langenhorst, F, Bridges, J.C., Zega, T.J., Stroud, R.M., Cordier, P., Harvey, R.P., Lee, M., Gouttelle, M., and Zolensky, M. (2008) TEM study of thermally modified Comet 81P/Wild 2 dust particles by interactions with the aerogel matrix during the Stardust capture process. Meteoritics and Planetary Science, 43, 97-120.
15. McCallister, R.H. (1978) The coarsening kinetics associated with exsolution in an iron-free clinopyroxene. Contributions to Mineralogy and Petrology, 65, 327-331.
16. McCallister, R.H. and Nord Jr., G.L. (1981) Subcalcic diopsides from kimberlites: Chemistry, exsolution microstructures, and thermal history. Contributions to Mineralogy and Petrology, 78, 118-125.
17. McCallister, R.H. and Yund, R.A. (1977) Coherent exsolution in Fe-free pyroxenes. American Mineralogist, 62, 721-726.
18. Nakamura, T., Noguchi, T., Tsuchiyama, A., Ushikubo, T., Kita, N.T., Valley, J.W., Zolensky, M.E., Kakazu, Y., Sakamoto, K., Mashio, E., Uesugi, K., and Nakano, T. (2008) Chondrule-like objects recovered from short-period comet 81P/Wild 2. Science, 321, 1664-1667.
19. Roskosz, M., Leroux, H., and Watson, H.C. (2008) Thermal history, partial preservation and sampling bias recorded by Stardust cometary grains during their capture. Earth and Planetary Science Letters, 273, 195-202.
20. Schwartz, J.M. and McCallum, I.S. (2005) Comparative study of equilibrated and unequilibrated eucrites: Subsolidus thermal histories of Haraiya and Pasamonte. American Mineralogist, 90, 1871-1886.
21. Takeda, H., Miyamoto, M., Ishii, T., and Lofgren, G.E. (1975) Relative cooling rates of mare basalts at the Apollo 12 and 15 sites as estimated from pyroxene exsolution data. Proceedings of the 6th Lunar Science Conference, p. 987-996, Houston, Texas.
22. Van Boekel, R. and others (2004) The building blocks of planets within the "terrestrial" region of protoplanetary disks. Nature, 432, 479-482.
23. Van Cappellen, E. (1990) The parameterless correction method in X-ray micro-analysis. Microscopy Microanalysis Microstructures, 1, 1-22.
24. Van Cappellen, E. and Doukhan, J.C. (1994) Quantitative transmission X-ray microanalysis of ionic compounds. Ultramicroscopy, 53, 343-349.
25. Waelkens, C. and others (1996) SWS observations of young main-sequence stars with dusty circumstellar disks. Astronomy and Astrophysics, 315, L245-L248.
26. Watanabe, S., Kitamura, M., and Morimoto, N. (1985) A transmission electron microscope study of pyroxene chondrules in equilibrated L-group chondrites. Earth and Planetary Science Letters, 72, 87-98.
27. Weinbruch, S. and Müllier, W.F. (1995) Constraints on the cooling rates of chondrules from the microstructure of clinopyroxene and plagioclase. Geochimica et Cosmochimica Acta, 59, 3221-3230.
28. Weinbruch, S., Müller, W.F., and Hewins, R.H. (2001) A transmission electron microscope study of exsolution and coarsening in iron-bearing clinopyroxene from synthetic analogues of chondrules. Meteoritics and Planetary Science, 36, 1237-1248.
29. Weinbruch, S., Styrsa, V., and Müller, W.F. (2003) Exsolution and coarsening in iron-free clinopyroxene during isothermal annealing. Geochimica et Cosmochimica Acta, 67, 5071-5082.
30. Weinbruch, S., Styrsa, V., and Dirsch, T. (2006) The size distribution of exsolution lamellae in iron-free clinopyroxene. American Mineralogist, 91, 551-559.
31. Wooden, D.H. (2002) Comet grains: Their IR emission and their relation to ISM grains. Earth, Moon, and Planets, 89, 247-287.
32. Zolensky, M. and Koeberl, C. (1991) Why are blue zhamanshinites blue?: Liquid immiscibility in an impact melt. Geochimica et Cosmochimica Acta, 55, 1483-1486.
33. Zolensky, M.E. and others (2006) Mineralogy and petrology of comet 81P/ Wild 2 nucleus samples. Science, 314, 1735-1739.
34. Zolensky, M., Nakamura-Messenger, K., Fletcher, L., and See, T. (2008) Curation, spacecraft recovery and preliminary examination for the Stardust Mission: A perspective from the Curatorial Facility. Meteoritics and Planetary Science, 43, 5-21.