Characteristics and in situ U-Pb dating of hydrothermal titanite by LA-ICPMS of the Jingshandian iron skarn deposit, Hubei Province

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	Characteristics and in situ U-Pb dating of hydrothermal titanite by LA-ICPMS of the Jingshandian iron skarn deposit, Hubei Province
	Zhu QiaoQiao 5; Xie GuiQing 1; Jiang ZhongSheng ; Sun JinFeng 2; Li Wei 3
刊名	ACTA PETROLOGICA SINICA
	2014
卷号	30 期号:5 页码:1322-1338
关键词	Hydrothermal titanite In situ U-Pb dating Skarn iron deposit Southeastern Hubei Province
ISSN号	1000-0569
英文摘要	U-Pb ages and trace element compositions of two types of hydrothermal titanite from the Jinshandian iron skarn deposit, southeastern Hubei Province, have been successfully analyzed by laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). Compared to titanite from diopside and scapolite skarn, hydrothermal titanite from albite altered quartz diorite are characterized by lower REE, delta Eu values, Th/U, Lu/Hf ratios and higher Hf component and LREE/HREE, suggesting they formed under different environment. The amount of Ti in the hydrothermal titanite probably resulted from the decomposition of Ti-bearing accessory minerals such as titanite, ilmenite and rutile from magma during the alteration. In situ U-Pb dating of titanite by LA-ICPMS shows that titanite from diopside + anhydrite + magnenite and scapolite + anhydrite + magnenite skarn sample yield a weighted mean Pb-206/U-238 ages of 129.5 +/- 1Ma and 130.4 +/- 1. 2Ma, respectively, while that of albite altered quartz diorite give 127 +/- 12Ma. These ages might be considered to be the age of mineralization, consistent with crystallization age of phlogopite got by previous researcher, suggesting that Jinshandian iron skarn deposit formed associate with lithospheric thinning, similar to other skarn Cu-Fe deposits in the southeastern Hubei Province. Our study shows that in situ U-Pb dating of hydrothermal titanite by LA-ICPMS is a robust method for getting precise formation age of skarn iron deposit.
学科主题	地质年代学
WOS关键词	MIDDLE-LOWER REACHES ; HF ISOTOPIC CONSTRAINTS ; YANGTZE-RIVER VALLEY ; LATE MESOZOIC MAGMATISM ; NING-WU BASIN ; CU-AU-MO ; EASTERN CHINA ; SOUTHEASTERN HUBEI ; GOLD DEPOSIT ; GEOLOGICAL SIGNIFICANCE
WOS研究方向	Geology
语种	中文
出版者	SCIENCE PRESS
WOS记录号	WOS:000337205700010
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40387]
专题	中国地质科学院矿产资源研究所
作者单位	1.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 2.MRL Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China 3.Univ Chinese Acad Sci, Fac Earth Sci, Beijing 100049, Peoples R China 4.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 5.中国地质科学院矿产资源研究所
推荐引用方式 GB/T 7714	Zhu QiaoQiao,Xie GuiQing,Jiang ZhongSheng,et al. Characteristics and in situ U-Pb dating of hydrothermal titanite by LA-ICPMS of the Jingshandian iron skarn deposit, Hubei Province[J]. ACTA PETROLOGICA SINICA,2014,30(5):1322-1338.
APA	Zhu QiaoQiao,Xie GuiQing,Jiang ZhongSheng,Sun JinFeng,&Li Wei.(2014).Characteristics and in situ U-Pb dating of hydrothermal titanite by LA-ICPMS of the Jingshandian iron skarn deposit, Hubei Province.ACTA PETROLOGICA SINICA,30(5),1322-1338.
MLA	Zhu QiaoQiao,et al."Characteristics and in situ U-Pb dating of hydrothermal titanite by LA-ICPMS of the Jingshandian iron skarn deposit, Hubei Province".ACTA PETROLOGICA SINICA 30.5(2014):1322-1338.