The Furong deposit, located in southern Hunan Province, China, is a newly-discovered giant tin deposit spatially associated with the A-type Qitianling granite. The petrogenetic link between the giant Furong tin deposit and the Qitianling granite batholith remains controversial because of the lack of precise dating for the tin-polymetallic mineralization. Here we report for the first time in-situ U-Pb data on cassiterite obtained by LA-MC-ICP-MS and the results are compared to ID-TIMS data. The in-situ LA-MC-ICP-MS analyses of the cassiterites provide a reliable age constraint for tin-polymetallic mineralization in the Furong deposit, yielding an isochron age of 159.9 +/- 1.9 Ma (at 95% confidence level, MSWD = 18), which is indistinguishable from the ID-TIMS (206)Pb/(238)U weighted mean age of 158.2 +/- 0.4 Ma. The in situ U-Pb ages corroborate the Ar-Ar dates published for the Furong tin deposit, which indicate that the mineralization is coeval with the emplacement of the Qitianling granite batholith. These results provide further evidence of a close temporal link between the pluton's emplacement and tin mineralization in the Furong area. The data obtained clearly demonstrate that in-situ LA-MC-ICP-MS U-Pb dating of cassiterite is a robust geochronometer for direct dating of tin-polymetallic mineralization. (C) 2011 Elsevier B.V. All rights reserved.

Publication name	ORE GEOLOGY REVIEWS　Volume: 43 　Issue: 1 　Special Issue: SI 　Pages: 235-242　 Published: DEC 2011
Author(s)	Yuan, Shunda; Peng, Jiantang; Hao, Shuang; Li, Huimin; Geng, Jianzhen; Zhang, Dongliang
Corresponding author	YUAN Shunda  sdyuan011981@yahoo.com.cn  1. CAGS, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China  2. China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China  3. CAS, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550002, Peoples R China

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