干旱区生态环境知识资源中心(Arid): Metallographic Cooling Rate and Petrogenesis of the Recently Found Huoyanshan Iron Meteorite Shower

Arid

DOI	10.1029/2021JE006847
	Metallographic Cooling Rate and Petrogenesis of the Recently Found Huoyanshan Iron Meteorite Shower
	Wang, Nian; Wang, Guiqin; Zhang, Ting; Gu, Lixin; Zhang, Chi; Hu, Sen; Miao, Bingkui; Lin, Yangting
通讯作者	Lin, YT (corresponding author), Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China. ; Lin, YT (corresponding author), Univ Chinese Acad Sci, Beijing, Peoples R China. ; Wang, GQ (corresponding author), Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China. ; Wang, GQ (corresponding author), CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China.
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
ISSN	2169-9097
EISSN	2169-9100
出版年	2021
卷号	126 期号:9
英文摘要	The Huoyanshan iron meteorite shower, recently found in the Gobi Desert of Hami, Xinjiang, China, has very high Ni (21.1 wt%) content and low Au (2.0 ppm), Ir (0.02 ppm), Ge (1.7 ppm), and Ga (1.1 ppm) contents, and was classified into IAB-sLH subgroup. The iron has a finest octahedrite structure of Widmanstatten pattern (the intergrowth of kamacite [alpha] and taenite [gamma]) with plessite matrix, and euhedral schreibersite (Sch) crystals exclusively enclosed in kamacite bands. The textural features suggest the following formation process: gamma ->gamma + Sch ->gamma + Sch + alpha, and then gamma ->alpha(2) + gamma. The metallographic cooling rate of Huoyanshan iron was determined to be 3-50 degrees C/Myr using both the taenite Ni profile-matching and taenite central Ni content methods, with the bandwidths corrected for crystallographic orientation by electron backscatter diffraction (EBSD). The cooling rate of Huoyanshan is consistent with other sLH irons and confirms the slow cooling history of the IAB low-Au subgroups. These slow cooling rates require immediate re-accretion with a thick brecciated fragments layer in the parent body after the impact melting event. The depleted but unfractionated Re, Os, Ir, Ru, and Pt and the enriched Pd and Au abundances of Huoyanshan iron and other sLH subgroup irons show complementary feature to that of refractory metal nuggets in Ca-, Al-rich inclusions (CAIs), which could be explained by extracting the metallic Fe-Ni with HSE predominantly remained in CAIs from a CAI-bearing asteroid. The very high Ni content of sLH subgroup and its Mo isotope evidence (Worsham et al., 2017, ) suggest it has an oxidized parent body with non-carbonaceous chondrite-like precursor composition. We propose that the sLH subgroup was produced by impact melting of a LL like and CAI-bearing asteroid, followed by fast burying of thick and porous silicate breccia.
英文关键词	classification highly siderophile elements Huoyanshan iron IAB iron meteorite IAB-sLH subgroup thermal history
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000702402500011
WOS关键词	HIGHLY SIDEROPHILE ELEMENTS ; FE-NI ; GERMANIUM CONCENTRATIONS ; CHEMICAL CLASSIFICATION ; REFRACTORY INCLUSIONS ; METAL ; IAB ; ORIGIN ; CONSTRAINTS ; EVOLUTION
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
来源机构	中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363899
作者单位	[Wang, Nian; Zhang, Ting; Gu, Lixin; Zhang, Chi; Hu, Sen; Lin, Yangting] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China; [Wang, Nian; Zhang, Ting; Lin, Yangting] Univ Chinese Acad Sci, Beijing, Peoples R China; [Wang, Guiqin] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China; [Wang, Guiqin] CAS Ctr Excellence Comparat Planetol, Hefei, Peoples R China; [Miao, Bingkui] Guilin Univ Technol, Key Lab Geol Engn Ctr Guangxi Prov, Guilin, Peoples R China
推荐引用方式 GB/T 7714	Wang, Nian,Wang, Guiqin,Zhang, Ting,et al. Metallographic Cooling Rate and Petrogenesis of the Recently Found Huoyanshan Iron Meteorite Shower[J]. 中国科学院地质与地球物理研究所,2021,126(9).
APA	Wang, Nian.,Wang, Guiqin.,Zhang, Ting.,Gu, Lixin.,Zhang, Chi.,...&Lin, Yangting.(2021).Metallographic Cooling Rate and Petrogenesis of the Recently Found Huoyanshan Iron Meteorite Shower.JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS,126(9).
MLA	Wang, Nian,et al."Metallographic Cooling Rate and Petrogenesis of the Recently Found Huoyanshan Iron Meteorite Shower".JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS 126.9(2021).