Institutional Repository of State Key Laboratory of Lithospheric Evolution
| Shidian meteorite, a new fall analog of near-Earth asteroid (101955) Bennu | |
| Fan, Yan1,2,3; Li, Shijie3,4; Liu, Shen1,2; Yin, Qingzhu5; Song, Guangming6; Xu, Rui7; Zhang, Jiang8; Zhang, Pengfei9; Liu, Chengyu7; Wang, Rong7; Smith, Thomas10 | |
| 2022-12-01 | |
| Source Publication | METEORITICS & PLANETARY SCIENCE
 |
| ISSN | 1086-9379 |
| Volume | 57Issue:12Pages:2192-2215 |
| Abstract | Shidian is a recent meteorite which fell in Yunnan province, China, on November 27, 2017, and has been classified as a CM2 chondrite. Petrography, mineralogy, oxygen and chromium isotopic composition, reflectance spectrum, and density studies of Shidian are reported in this study. Clasts with different aqueous alteration degree, two type 1 clasts with nontypical CM petrography, and one metamorphic clast are observed in Shidian. Mineralogically, Shidian main body consists of phyllosilicates (similar to 70 vol%), forsterite (similar to 13 vol%), fayalitic olivine, carbonates, sulfide, high-Ca pyroxene, magnetite framboids, and Fe-Ni metal. The average electron microprobe analysis (EMPA) analytical totals of phyllosilicates are 84.07 +/- 1.75 wt%, with average FeO/SiO2 of tochilinite-cronstedtite intergrowths (TCIs) in different clasts ranging from 1.18 to 3.29. The bulk geochemical composition is characterized by flat rare earth element pattern, and by depletion of highly volatile elements. The whole rock oxygen isotopic composition is -0.51 +/- 0.73 parts per thousand, 5.44 +/- 1.01 parts per thousand, and -3.38 +/- 0.20 parts per thousand for delta O-17, delta O-18, and Delta O-17, respectively, with bulk chromium isotopic composition as epsilon Cr-54 = 1.00 +/- 0.11. The grain density, bulk density, and porosity are 2.758 +/- 0.008 g cm(-3), 2.500 +/- 0.004 g cm(-3), and 9.37 +/- 0.59%, respectively. The reflectance spectrum shows "blue" (negative) continuum slope across the visible and near-infrared range, with characteristic absorption features (such as 0.765, 0.923, and 1.160 mu m for phyllosilicates). These characteristics indicate that Shidian is an unheated, brecciated CM chondrite and may be an analog of asteroid Bennu. |
| DOI | 10.1111/maps.13925 |
| Funding Organization | Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| WOS Keyword | CM CARBONACEOUS CHONDRITES ; SPECTRAL REFLECTANCE PROPERTIES ; AQUEOUS ALTERATION ; OXYGEN-ISOTOPE ; THERMAL METAMORPHISM ; CHEMICAL-COMPOSITION ; MU-M ; ORIGIN ; MINERALOGY ; WATER |
| Language | 英语 |
| Funding Project | Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; [XDB41000000] ; [KJSP2020020101] ; [42173046] |
| Funding Organization | Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Strategic Priority Research Program of the Chinese Academy of Science ; Chinese Academy of Sciences "Light of West China" Program ; Chinese Academy of Sciences "Light of West China" Program ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| WOS Research Area | Geochemistry & Geophysics |
| WOS Subject | Geochemistry & Geophysics |
| WOS ID | WOS:000895496700006 |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/106962 |
| Collection | 岩石圈演化国家重点实验室 |
| Corresponding Author | Li, Shijie; Liu, Shen |
| Affiliation | 1.Northwest Univ, State Key Lab Continental Dynam, Xian 710069, Peoples R China 2.Northwest Univ, Dept Geol, Xian 710069, Peoples R China 3.Chinese Acad Sci, Inst Geochem, Ctr Lunar & Planetary Sci, Guiyang 550081, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China 5.Univ Calif Davis, Dept Earth & Planetary Sci, One Shields Ave, Davis, CA 95616 USA 6.Beijing Inst Spacecraft Environm Engn, Beijing 100094, Peoples R China 7.Chinese Acad Sci, Shanghai Inst Tech Phys, Key Lab Space Act Optoelect Technol, Shanghai 200083, Peoples R China 8.Shandong Univ, Inst Space Sci, Sch Space Sci & Phys, Shandong Key Lab Opt Astron & Solar Terr Environm, Weihai 264209, Peoples R China 9.Macau Univ Sci & Technol, State Key Lab Lunar & Planetary Sci, Macau 999078, Peoples R China 10.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| Recommended Citation GB/T 7714 | Fan, Yan,Li, Shijie,Liu, Shen,et al. Shidian meteorite, a new fall analog of near-Earth asteroid (101955) Bennu[J]. METEORITICS & PLANETARY SCIENCE,2022,57(12):2192-2215. |
| APA | Fan, Yan.,Li, Shijie.,Liu, Shen.,Yin, Qingzhu.,Song, Guangming.,...&Smith, Thomas.(2022).Shidian meteorite, a new fall analog of near-Earth asteroid (101955) Bennu.METEORITICS & PLANETARY SCIENCE,57(12),2192-2215. |
| MLA | Fan, Yan,et al."Shidian meteorite, a new fall analog of near-Earth asteroid (101955) Bennu".METEORITICS & PLANETARY SCIENCE 57.12(2022):2192-2215. |
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