测试对象：锆石、榍石、锡石、独居石、沥青铀矿、晶质铀矿等副矿物

测试周期：需预约，5-10个工作日可完成测试。可提供测试加急服务。

送样要求：1、单矿物需制靶、照透反射、CL照相；2、薄片、探针片、光片长度不超过5cm，宽不超过3cm，厚度不超过0.8cm；3、客户可灵活选择自行测试或者委托测试。

完成标准：仪器状态良好，监控标样测试年龄值在国际推荐值误差范围内。

方法描述：
（××代表实验中激光束斑和频率的数值，根据具体实验条件填写。锆石常规分析条件为32 µm和5 Hz）

1.1锆石LA-ICP-MS微区原位U-Pb定年和微量元素分析

1.2 In-situ U-Pb dating and trace element analysis of zircon by LA-ICP-MS

U-Pb dating and trace element analysis of zircon were simultaneously conducted by LA-ICP-MS at the Wuhan SampleSolution Analytical Technology Co., Ltd., Wuhan, China. Detailed operating conditions for the laser ablation system and the ICP-MS instrument and data reduction are the same as description by Zong et al. (2017). Laser sampling was performed using a GeolasPro laser ablation system that consists of a COMPexPro 102 ArF excimer laser (wavelength of 193 nm and maximum energy of 200 mJ) and a MicroLas optical system. An Agilent 7700e ICP-MS instrument was used to acquire ion-signal intensities. Helium was applied as a carrier gas. Argon was used as the make-up gas and mixed with the carrier gas via a T-connector before entering the ICP. A “wire” signal smoothing device is included in this laser ablation system (Hu et al., 2015). The spot size and frequency of the laser were set to ××µm and ××Hz, respectively, in this study. Zircon 91500 and glass NIST610 were used as external standards for U-Pb dating and trace element calibration, respectively. Each analysis incorporated a background acquisition of approximately 20-30 s followed by 50 s of data acquisition from the sample. An Excel-based software ICPMSDataCal was used to perform off-line selection and integration of background and analyzed signals, time-drift correction and quantitative calibration for trace element analysis and U-Pb dating (Liu et al., 2008; Liu et al., 2010). Concordia diagrams and weighted mean calculations were made using Isoplot/Ex_ver3 (Ludwig, 2003).
（The real in-situ U-Pb dating of zircon in thin-section can cite reference of Zong et al. (2010)）.
References
Zong, K.Q., Klemd, R., Yuan, Y., He, Z.Y., Guo, J.L., Shi, X.L., Liu, Y.S., Hu, Z.C., Zhang, Z.M., 2017. The assembly of Rodinia: The correlation of early Neoproterozoic (ca. 900 Ma) high-grade metamorphism and continental arc formation in the southern Beishan Orogen, southern Central Asian Orogenic Belt (CAOB). Precambrian Research, 290, 32–48.
Hu, Z.C., Zhang, W., Liu, Y.S., Gao, S., Li, M., Zong, K.Q., Chen, H.H., Hu, S.H., 2015. “Wave” signal-smoothing and mercury-removing device for laser ablation quadrupole and multiple collector ICPMS analysis: application to lead isotope analysis. Analytical Chemistry, 87(2), 1152–1157.
Liu, Y.S., Hu, Z.C., Gao, S., Günther, D., Xu, J., Gao, C.G. and Chen, H.H., 2008. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard. Chemical Geology, 257(1-2): 34-43.
Liu, Y.S., Gao, S., Hu, Z.C., Gao, C.G., Zong, K.Q. and Wang, D.B., 2010. Continental and oceanic crust recycling-induced melt-peridotite interactions in the Trans-North China Orogen: U-Pb dating, Hf isotopes and trace elements in zircons of mantle xenoliths. Journal of Petrology, 51(1–2): 537–571.
Ludwig, K.R., 2003. ISOPLOT 3.00: A Geochronological Toolkit for Microsoft Excel. Berkeley Geochronology Center, California, Berkeley, 39 pp.
Zong, K.Q., Liu, Y.S., Gao, C.G., Hu, Z.C., Gao, S., Gong, H.J., 2010. In situ U-Pb dating and trace element analysis of zircons in thin sections of eclogite: Refining constraints on the ultra-high pressure metamorphism of the Sulu terrane, China. Chem. Geol. 269: 237-251.