A precise U–Pb age on cassiterite from the Xianghualing tin-polymetallic deposit (Hunan, South China)

	A precise U–Pb age on cassiterite from the Xianghualing tin-polymetallic deposit (Hunan, South China)
	Shunda Yuan; Jiantang Peng; Ruizhong Hu; Huimin Li; Nengping Shen; Dongliang Zhang
	2008
发表期刊	Mineralium Deposita
卷号	43 期号:4 页码:375-382
合作性质	其它
其他摘要	We report the first precise U–Pb isotope data on cassiterite from the large Xianghualing tin-polymetallic deposit in the central Nanling district, South China. The results show that four separates from sample XF-51 have a relatively narrow range of 206Pb/238U apparent ages, varying from 152 to 157 Ma, and the three 206Pb/238U apparent ages yield a weighted average value of 156 ± 4 Ma (MSWD = 0.32). Separates from two other cassiterite samples do not have sufficient radiogenic Pb to generate a reliable 206Pb/238U age. Seven separates from the above three cassiterite samples define a well-constrained 238U–206Pb isochron corresponding to an age of 157 ± 6 Ma (MSWD = 34). A comparison of the U–Pb cassiterite ages with published Ar–Ar dates on muscovite from this deposit and K–Ar age data on biotite from the pluton genetically related to the tin mineralization in this area demonstrates that the U–Pb isotope system of cassiterite is a potential geochronometer. Combined with the Ar–Ar dates of muscovite from this deposit, we can constrain the absolute age of tin-polymetallic mineralization in Xianghualing at 154–157 Ma. The dates obtained in this study, consistent with the published geochronological results from other important deposits in this region, reveal that the large-scale tungsten–tin mineralization in the central Nanling region was predominantly emplaced during 150–161 Ma.
关键词	U–pb Isotope System Cassiterite Radiometric Dating Tin Mineralization Xianghualing Nanling China
学科领域	矿床地球化学
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.gyig.ac.cn/handle/352002/3105
专题	矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文矿床地球化学国家重点实验室
推荐引用方式 GB/T 7714	Shunda Yuan,Jiantang Peng,Ruizhong Hu,等. A precise U–Pb age on cassiterite from the Xianghualing tin-polymetallic deposit (Hunan, South China)[J]. Mineralium Deposita,2008,43(4):375-382.
APA	Shunda Yuan,Jiantang Peng,Ruizhong Hu,Huimin Li,Nengping Shen,&Dongliang Zhang.(2008).A precise U–Pb age on cassiterite from the Xianghualing tin-polymetallic deposit (Hunan, South China).Mineralium Deposita,43(4),375-382.
MLA	Shunda Yuan,et al."A precise U–Pb age on cassiterite from the Xianghualing tin-polymetallic deposit (Hunan, South China)".Mineralium Deposita 43.4(2008):375-382.

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