Adhering grains and surface features on two Itokawa particles

Dobrica, E.; Ogliore, R. C.

doi:10.1186/s40623-016-0391-7

Adhering grains and surface features on two Itokawa particles

Journal Article · Sat Feb 13 00:00:00 EST 2016 · Earth, Planets and Space (Online)

DOI:https://doi.org/10.1186/s40623-016-0391-7· OSTI ID:1376693

Dobrica, E. ^[1]; Ogliore, R. C. ^[2]

Univ. of New Mexico, Albuquerque, NM (United States)
Washington Univ., St. Louis, MO (United States)

We investigated the surface texture and chemical compositions of two ~40-μm particles returned from the surface regolith of asteroid Itokawa (RB-DQ04-0062 and RB-DQ04-0091) by the Japan Aerospace Exploration Agency’s Hayabusa mission. We identified splash melts, surface blistering, and many small adhering particles. Seven focused ion beam sections were extracted from both Itokawa particles, targeting one splash melt and ten adhering particles to investigate their composition and provenance and the role of micrometeoroid impacts on Itokawa’s surface. Based on the particle’s structure, mineralogy, and interface between the adhering particle and host grain, we identified lithic fragments and particles deposited by impact. These have morphologies and compositions consistent with impact-generated deposits: two have morphologies and compositions that are consistent with impact-generated silica glass, and one was a Ni-free, metallic Fe, and S-rich assemblage that was likely generated by vapor recondensation during a micrometeoroid impact. Here this study shows that, even though its regolith is young, micrometeoroid impacts have altered the regolith of asteroid Itokawa.

View Accepted Manuscript (DOE)

Research Organization:: Nevada Field Office, Las Vegas, NV (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)

OSTI ID:: 1376693

Journal Information:: Earth, Planets and Space (Online), Journal Name: Earth, Planets and Space (Online) Journal Issue: 1 Vol. 68; ISSN 1880-5981

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

References (17)

The optical effects of small iron particles that darken but do not redden: Evidence of intense space weathering on Mercury Lucey, Paul G.; Riner, Miriam A. Icarus, Vol. 212, Issue 2 https://doi.org/10.1016/j.icarus.2011.01.022	journal	April 2011
Dynamics of levitating dust particles near asteroids and the Moon Hartzell, C. M.; Scheeres, D. J. Journal of Geophysical Research: Planets, Vol. 118, Issue 1 https://doi.org/10.1029/2012je004162	journal	January 2013
Itokawa Dust Particles: A Direct Link Between S-Type Asteroids and Ordinary Chondrites Nakamura, T.; Noguchi, T.; Tanaka, M. Science, Vol. 333, Issue 6046 https://doi.org/10.1126/science.1207758	journal	August 2011
Sequential analysis of carbonaceous materials in Hayabusa-returned samples for the determination of their origin Uesugi, Masayuki; Naraoka, Hiroshi; Ito, Motoo Earth, Planets and Space, Vol. 66, Issue 1 https://doi.org/10.1186/1880-5981-66-102	journal	August 2014
Mineralogy and defect microstructure of an olivine-dominated Itokawa dust particle: evidence for shock metamorphism, collisional fragmentation, and LL chondrite origin Langenhorst, Falko; Harries, Dennis; Pollok, Kilian Earth, Planets and Space, Vol. 66, Issue 1 https://doi.org/10.1186/1880-5981-66-118	journal	January 2014
Dust Levitation on Asteroids Lee, Pascal Icarus, Vol. 124, Issue 1 https://doi.org/10.1006/icar.1996.0197	journal	November 1996
The nature and origin of rims on lunar soil grains Keller, Lindsay P.; McKay, David S. Geochimica et Cosmochimica Acta, Vol. 61, Issue 11 https://doi.org/10.1016/S0016-7037(97)00085-9	journal	June 1997
Oxygen three-isotope ratios of silicate particles returned from asteroid Itokawa by the Hayabusa spacecraft: A strong link with equilibrated LL chondrites Nakashima, Daisuke; Kita, Noriko T.; Ushikubo, Takayuki Earth and Planetary Science Letters, Vol. 379 https://doi.org/10.1016/j.epsl.2013.08.009	journal	October 2013
A survey of possible impact structures on 25143 Itokawa Hirata, Naru; Barnouin-Jha, Olivier S.; Honda, Chikatoshi Icarus, Vol. 200, Issue 2 https://doi.org/10.1016/j.icarus.2008.10.027	journal	April 2009
Dynamics of levitating dust particles near asteroids and the Moon Hartzell, C. M.; Scheeres, D. J. Journal of Geophysical Research: Planets, Vol. 118, Issue 1 https://doi.org/10.1029/2012JE004162	journal	January 2013
Space environment of an asteroid preserved on micrograins returned by the Hayabusa spacecraft Nakamura, Eizo; Makishima, Akio; Moriguti, Takuya Proceedings of the National Academy of Sciences, Vol. 109, Issue 11 https://doi.org/10.1073/pnas.1116236109	journal	February 2012
Light element implantations in metals Kaletta, D. Radiation Effects, Vol. 47, Issue 1-4 https://doi.org/10.1080/00337578008209218	journal	January 1980
Space weathered rims found on the surfaces of the Itokawa dust particles Noguchi, Takaaki; Kimura, Makoto; Hashimoto, Takahito Meteoritics & Planetary Science, Vol. 49, Issue 2 https://doi.org/10.1111/maps.12111	journal	April 2013
Regolith Migration and Sorting on Asteroid Itokawa Miyamoto, Hideaki; Yano, Hajime; Scheeres, Daniel J. Science, Vol. 316, Issue 5827 https://doi.org/10.1126/science.1134390	journal	May 2007
Oxygen Isotopic Compositions of Asteroidal Materials Returned from Itokawa by the Hayabusa Mission Yurimoto, Hisayoshi; Abe, Ken-ichi; Abe, Masanao Science, Vol. 333, Issue 6046 https://doi.org/10.1126/science.1207776	journal	August 2011
Microchemical and structural evidence for space weathering in soils from asteroid Itokawa Thompson, Michelle S.; Christoffersen, Roy; Zega, Thomas J. Earth, Planets and Space, Vol. 66, Issue 1 https://doi.org/10.1186/1880-5981-66-89	journal	August 2014
Asteroid Space Weathering and Regolith Evolution Clark, Beth Ellen; Hapke, Bruce; Pieters, Carle Asteroids III https://doi.org/10.2307/j.ctv1v7zdn4.44	book	January 2002

Cited By (1)

Special issue “Science of solar system materials examined from Hayabusa and future missions (II)” Okada, Tatsuaki; Binzel, Richard P.; Connolly, Harold C. Earth, Planets and Space, Vol. 69, Issue 1 https://doi.org/10.1186/s40623-017-0617-3	journal	February 2017

Similar Records

THE EFFECT OF THE DUST SIZE DISTRIBUTION ON ASTEROID POLARIZATION

Journal Article · Mon Dec 14 23:00:00 EST 2009 · Astronomical Journal (New York, N.Y. Online) · OSTI ID:21301526

Chemical and mineralogical size segregation in the impact disruption of anhydrous stone meteorites

Conference · Tue Feb 01 23:00:00 EST 2005 · OSTI ID:1008912

Solar wind contributions to Earth’s oceans

Journal Article · Sun Nov 28 19:00:00 EST 2021 · Nature Astronomy · OSTI ID:1834330

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
Asteroid
Micrometeoroid
Regolith
Space weathering

Adhering grains and surface features on two Itokawa particles

Citation Formats

References (17)

Cited By (1)

Similar Records

Related Subjects