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Analysis of "Stone" Samples from C-Type Asteroid RyuguAs a part of activities of initial analysis, we analyzed eighteen Ryugu “stone” samples of 1 ~ 8mm in size: seven stones from the 1st touch down site and eleven from the 2nd touch down site. Ryugu stones were analyzed first using X-rays, UV, visible, near-infrared, mid-infrared, and muon probes for surface reflectance spectra, internal 3D structure and element distribution, crystal structures, and bulk composition of light elements such as C, N, and O. Measurements for magnetic, thermal, and physical properties using some stones were also performed. TOF-SIMS analysis of fluid inclusions as being continued. Small particles separated from some stones were analyzed by IR-CT. Based on 3D-CT images of individual stones, objects of interests were identified, separated by pFIB cutting, and exposed by polishing on the surface of epoxy disks. FE-EPMA/FE-SEM analysis was made on ~40 polished epoxy disks for chemical composition and textural observation. FIB sections and small (~15 μm in size) fragments were separated from polished surface and analyzed by TEM, STXM,XRF, and nano-CT.
Document ID
20220007269
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
T. Nakamura (Tohoku University Sendai, Japan)
M. Matsumoto (Tohoku University Sendai, Japan)
K. Amano (Tohoku University Sendai, Japan)
Y. Enokido (Tohoku University Sendai, Japan)
M. Zolensky (Johnson Space Center Houston, Texas, United States)
T. Mikouchi (The University of Tokyo)
H. Genda (Tokyo Institute of Technology Tokyo, Tôkyô, Japan)
S. Tanaka (Japan Aerospace Exploration Agency Tokyo, Japan)
M.Y. Zolotov (Arizona State University Tempe, Arizona, United States)
K. Kurosawa (Chiba Institute of Technology Narashino, Japan)
S. Wakita (Massachusetts Institute of Technology Cambridge, Massachusetts, United States)
R. Hyodo (Japan Aerospace Exploration Agency Tokyo, Japan)
H. Nagano (Nagoya University Nagoya, Japan)
D. Nakashima (Tohoku University Sendai, Japan)
Y. Takahashi (The University of Tokyo)
Y. Fujioka (Tohoku University Sendai, Japan)
M. Kikuiri (Tohoku University Sendai, Japan)
E. Kagawa (Tohoku University Sendai, Japan)
M. Matsuoka (Laboratory of Space Studies and Instrumentation in Astrophysics Meudon, France)
A. Brearley (University of New Mexico Albuquerque, New Mexico, United States)
A. Tsuchiyama (Ritsumeikan University Kyoto, Japan)
M. Uesugi (JASRI/SPring-8)
J. Matsuno (Ritsumeikan University Kyoto, Japan)
Y. Kimura (Hokkaido University Sapporo, Hokkaidô, Japan)
M. Sato (The University of Tokyo)
R. Milliken (Brown University Providence, Rhode Island, United States)
E. Tatsumi (University of La Laguna San Cristóbal de La Laguna, Spain)
S. Sugita (The University of Tokyo)
T. Hiroi (Brown University Providence, Rhode Island, United States)
K. Kitazato (University of Aizu Fukushima, Japan)
D. Brownlee (University of Washington)
D. J. Joswiak (University of Washington)
M.Takahashi (Tohoku University Sendai, Japan)
K. Ninomiya (Osaka University Osaka, Japan)
T. Takahashi (University of Tokyo)
T. Osawa (Japan Atomic Energy Agency Tōkai-mura, Japan)
K. Terada (Osaka University Osaka, Japan)
F. E. Brenker (Goethe University Frankfurt Frankfurt am Main, Hessen, Germany)
B. J. Tkalcec (Goethe University Frankfurt Frankfurt am Main, Hessen, Germany)
L. Vincze (Ghent University Ghent, Belgium)
R.Brunetto (University of Paris-Saclay Gif-sur-Yvette, France)
A. Aléon-Toppani (University of Paris-Saclay Gif-sur-Yvette, France)
Q. Chan (Royal Holloway University of London Egham, Surrey, United Kingdom)
M. Roskosz (National Museum of Natural History Paris, France)
J.-C. Viennet (National Museum of Natural History Paris, France)
P. Beck (Grenoble Alpes University Saint-Martin-d'Hères, France)
E. Alp (Argonne National Laboratory Lemont, Illinois, United States)
T. Michikami (Kindai University Osaka, Japan)
Y.Nagaashi (Kobe University Kobe, Japan)
T. Tsuji (Kyushu University Fukuoka, Japan)
Y. Ino (Kwansei Gakuin University Nishinomiya, Japan)
J. Martinez (Johnson Space Center Houston, Texas, United States)
J. Han (University of Houston Houston, Texas, United States)
A. Dolocan (The University of Texas at Austin Austin, Texas, United States)
R.J. Bodnar (Virginia Tech Blacksburg, Virginia, United States)
M. Tanaka (National Institute for Materials Science Tsukuba, Ibaraki, Japan)
H. Yoshida (The University of Tokyo)
K.Sugiyama (Tohoku University Sendai, Japan)
A. J. King (Natural History Museum)
K. Fukushi (Kanazawa University Kanazawa, Japan)
H. Suga (JASRI/SPring-8)
S.Yamashita (The Graduate University for Advanced Studies, SOKENDAI Hayama, Japan)
T. Kawai (The University of Tokyo)
K. Inoue (Kanazawa University Kanazawa, Japan)
A. Nakato (Japan Aerospace Exploration Agency Tokyo, Japan)
T. Noguchi (Kyushu University Fukuoka, Japan)
F. Vilas (Planetary Science Institute Tucson, Arizona, United States)
A. Hendrix (Planetary Science Institute Tucson, Arizona, United States)
C. Jaramillo (Pennsylvania State University State College, Pennsylvania, United States)
D. L. Domingue (Planetary Science Institute Tucson, Arizona, United States)
G. Dominguez (California State University System Long Beach, California, United States)
Z. Gainsforth ( University of California)
C. Engrand (IJCLab, UMR)
J.Duprat (National Museum of Natural History Paris, France)
S. S. Russell (Natural History Museum)
E. Bonato (DLR Berlin, Germany)
C. Ma (California Institute of Technology Pasadena, California, United States)
T. Kawamoto (Shizuoka University Shizuoka, Japan)
H. Yurimoto (Hokkaido University Sapporo, Hokkaidô, Japan)
R. Okazaki (Kyushu University Fukuoka, Japan)
H. Yabuta (Hiroshima University Hiroshima, Japan)
H.Naraoka (Kyushu University Fukuoka, Japan)
K. Sakamoto (Japan Aerospace Exploration Agency Tokyo, Japan)
S. Tachibana (The University of Tokyo)
S. Watanabe (Nagoya University Nagoya, Japan)
Y. Tsuda (Japan Aerospace Exploration Agency Tokyo, Japan)
Date Acquired
May 10, 2022
Subject Category
Geosciences (General)
Meeting Information
Meeting: Meteoritical Society Meeting
Location: Glascow
Country: GB
Start Date: August 14, 2022
End Date: August 19, 2022
Sponsors: The Meteoritical Society
Funding Number(s)
WBS: 191589.04.02.01.06
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.
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