Comparing Wild 2 particles to chondrites and IDPs

Michael Zolensky, Keiko Nakamura-Messenger, Frans Rietmeijer, Hugues Leroux, Takashi Mikouchi, Kazumasa Ohsumi, Steven Simon, Lawrence Grossman, Thomas Stephan, Michael Weisberg, Michael Velbel, Thomas Zega, Rhonda Stroud, Kazushige Tomeoka, Ichiro Ohnishi, Naotaka Tomioka, Tomoki Nakamura, Graciela Matrajt, David Joswiak, Donald BrownleeFalko Langenhorst, Alexander Krot, Anton Kearsley, Hope Ishii, Giles Graham, Zu Rong Dai, Miaofang Chi, John Bradley, Kenji Hagiya, Matthieu Gounelle, Lindsay Keller, John Bridges

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

We compare the observed composition ranges of olivine, pyroxene, and Fe-Ni sulfides in Wild 2 grains with those from chondritic interplanetary dust particles (IDPs) and chondrite classes to explore whether these data suggest affinities to known hydrous materials in particular. Wild 2 olivine has an extremely wide composition range, from Fa0-96, with a pronounced frequency peak at Fa1. The composition range displayed by the low-calcium pyroxene is also very extensive, from Fs48 to Fs0, with a significant frequency peak centered at Fs5. These ranges are as broad or broader than those reported for any other extraterrestrial material. Wild 2 Fe-Ni sulfides mainly have compositions close to that of FeS, with less than 2 atom% Ni; to date, only two pentlandite grains have been found among the Wild grains, suggesting that this mineral is not abundant. The complete lack of compositions between FeS and pentlandite (with intermediate solid solution compositions) suggests (but does not require) that FeS and pentlandite condensed as crystalline species, i.e., did not form as amorphous phases, which later became annealed. While we have not yet observed any direct evidence of water-bearing minerals, the presence of Ni-bearing sulfides, and magnesium-dominated olivine and low-Ca pyroxene does not rule out their presence at low abundance. We do conclude that new investigations of major- and minor- element compositions of chondrite matrix and IDPs are required.

Original languageEnglish (US)
Pages (from-to)261-272
Number of pages12
JournalMeteoritics and Planetary Science
Volume43
Issue number1-2
StatePublished - Jan 2008
Externally publishedYes

Fingerprint

interplanetary dust
pentlandite
chondrites
chondrite
pyroxene
olivine
sulfide
sulfides
mineral
solid solution
magnesium
calcium
minerals
matrix
particle
affinity
solid solutions
water
material
matrices

ASJC Scopus subject areas

  • Geophysics

Cite this

Zolensky, M., Nakamura-Messenger, K., Rietmeijer, F., Leroux, H., Mikouchi, T., Ohsumi, K., ... Bridges, J. (2008). Comparing Wild 2 particles to chondrites and IDPs. Meteoritics and Planetary Science, 43(1-2), 261-272.

Comparing Wild 2 particles to chondrites and IDPs. / Zolensky, Michael; Nakamura-Messenger, Keiko; Rietmeijer, Frans; Leroux, Hugues; Mikouchi, Takashi; Ohsumi, Kazumasa; Simon, Steven; Grossman, Lawrence; Stephan, Thomas; Weisberg, Michael; Velbel, Michael; Zega, Thomas; Stroud, Rhonda; Tomeoka, Kazushige; Ohnishi, Ichiro; Tomioka, Naotaka; Nakamura, Tomoki; Matrajt, Graciela; Joswiak, David; Brownlee, Donald; Langenhorst, Falko; Krot, Alexander; Kearsley, Anton; Ishii, Hope; Graham, Giles; Dai, Zu Rong; Chi, Miaofang; Bradley, John; Hagiya, Kenji; Gounelle, Matthieu; Keller, Lindsay; Bridges, John.

In: Meteoritics and Planetary Science, Vol. 43, No. 1-2, 01.2008, p. 261-272.

Research output: Contribution to journalArticle

Zolensky, M, Nakamura-Messenger, K, Rietmeijer, F, Leroux, H, Mikouchi, T, Ohsumi, K, Simon, S, Grossman, L, Stephan, T, Weisberg, M, Velbel, M, Zega, T, Stroud, R, Tomeoka, K, Ohnishi, I, Tomioka, N, Nakamura, T, Matrajt, G, Joswiak, D, Brownlee, D, Langenhorst, F, Krot, A, Kearsley, A, Ishii, H, Graham, G, Dai, ZR, Chi, M, Bradley, J, Hagiya, K, Gounelle, M, Keller, L & Bridges, J 2008, 'Comparing Wild 2 particles to chondrites and IDPs', Meteoritics and Planetary Science, vol. 43, no. 1-2, pp. 261-272.
Zolensky M, Nakamura-Messenger K, Rietmeijer F, Leroux H, Mikouchi T, Ohsumi K et al. Comparing Wild 2 particles to chondrites and IDPs. Meteoritics and Planetary Science. 2008 Jan;43(1-2):261-272.
Zolensky, Michael ; Nakamura-Messenger, Keiko ; Rietmeijer, Frans ; Leroux, Hugues ; Mikouchi, Takashi ; Ohsumi, Kazumasa ; Simon, Steven ; Grossman, Lawrence ; Stephan, Thomas ; Weisberg, Michael ; Velbel, Michael ; Zega, Thomas ; Stroud, Rhonda ; Tomeoka, Kazushige ; Ohnishi, Ichiro ; Tomioka, Naotaka ; Nakamura, Tomoki ; Matrajt, Graciela ; Joswiak, David ; Brownlee, Donald ; Langenhorst, Falko ; Krot, Alexander ; Kearsley, Anton ; Ishii, Hope ; Graham, Giles ; Dai, Zu Rong ; Chi, Miaofang ; Bradley, John ; Hagiya, Kenji ; Gounelle, Matthieu ; Keller, Lindsay ; Bridges, John. / Comparing Wild 2 particles to chondrites and IDPs. In: Meteoritics and Planetary Science. 2008 ; Vol. 43, No. 1-2. pp. 261-272.
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AU - Mikouchi, Takashi

AU - Ohsumi, Kazumasa

AU - Simon, Steven

AU - Grossman, Lawrence

AU - Stephan, Thomas

AU - Weisberg, Michael

AU - Velbel, Michael

AU - Zega, Thomas

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AU - Matrajt, Graciela

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AU - Brownlee, Donald

AU - Langenhorst, Falko

AU - Krot, Alexander

AU - Kearsley, Anton

AU - Ishii, Hope

AU - Graham, Giles

AU - Dai, Zu Rong

AU - Chi, Miaofang

AU - Bradley, John

AU - Hagiya, Kenji

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