LA-ICP-MS cassiterite and zircon U-Pb ages of the Weilasituo tin-polymetallic deposit in the southern Great Xing an Range and their geological significance

doi:10.13745/j.esf.sf.2018.4.1

Earth Science Frontiers ›› 2018, Vol. 25 ›› Issue (5): 183-201.DOI: 10.13745/j.esf.sf.2018.4.1

Previous Articles Next Articles

LA-ICP-MS cassiterite and zircon U-Pb ages of the Weilasituo tin-polymetallic deposit in the southern Great Xing an Range and their geological significance

LIU Ruilin,WU Guang,LI Tiegang,CHEN Gongzheng,WU Liwen,ZHANG Peichun,ZHANG Tong,JIANG Biao,LIU Wenyuan

1. MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chines Academy of Geological Sciences, Beijing 100037, China
2. MOE Key Laboratory of Orogenic Belts and Crustal Evolution, Peking University, Beijing 100871, China
3. School of Earth Sciences and Resources, China University of Geosciences(Beijing), Beijing 100083, China
4. Inner Mongolia Institute of Geological Survey, Hohhot 010020, China
5. Fujian Key Laboratory of Mineral Resources, Zijin College of Mining, Fuzhou University, Fuzhou 350108, China

Received:2018-02-08 Revised:2018-03-09 Online:2018-09-15 Published:2018-09-15

Abstract

Abstract: The Weilasituo tin-polymetallic deposit, located in Hexigten Banner of Inner Mongolia, is a newly discovered large tin deposit associated with tungsten, zinc, copper, molybdenum, rubidium, niobium and tantalum the west slope of the southern Great Xingan Range. Three types of mineralization developed in the deposit: the deep section altered granite-type orebody is dominated by Sn and associated with Zn, Rb, Nb; the middle section cryptoexplosive breccia-type orebody is mainly of Sn with Cu and Zn; and the shallow section comprises quartz vein-type Sn, W, Zn, Cu, and Mo ore bodies. The quartz vein-type ore bodies are the most economically valuable ores, they are hosted within the NNE-trending shattered fault zones of the Paleoproterozoic Baoyintu Group and Middle Variscan quartz diorite, whereas the altered granite- and cryptoexplosive breccia-type ore bodies are usually low grade ores. A cassiterite sample from the quartz vein-type Sn ore of the Weilasituo deposit was selected for LA-ICP-MS dating, which yielded a 206Pb/207Pb238U/207Pb isochron age of 136.0±6.1 Ma (MSWD=0.94) and a 207Pb/206Pb238U/206Pb concordant age of 132.3±5.4 Ma (MSWD=2.8). The result suggested that the Weilasituo Sn-polymetallic mineralization took place during the Early Cretaceous. A zircon sample from the Beidashan granite was also selected for LA-ICP-MS dating, and the result of a weighted mean 206Pb/238U age of 140±2 Ma (MSWD=0.10) indicated the ore causative intrusion also formed during the Early Cretaceous. The Weilasituo tin-polymetallic deposit belongs to a granite-related magmatic-hydrothermal deposit. Our dating results, together with previous researchers rock- and ore-forming ages of other Sn-polymetallic deposits in the southern Great Xingan Range, demonstrated that almost all Sn-polymetallic deposits formed during 140135 Ma, which suggests that the Early Cretaceous is the peak era for the formation of the Sn-polymetallic deposits in the southern Great Xingan Range.

Key words: cassiterite U-Pb age, zircon U-Pb age, Weilasituo tin-polymetallic deposit, Inner Mongolia, southern Great Xingan Range

CLC Number:

P618.44

LIU Ruilin,WU Guang,LI Tiegang,CHEN Gongzheng,WU Liwen,ZHANG Peichun,ZHANG Tong,JIANG Biao,LIU Wenyuan. LA-ICP-MS cassiterite and zircon U-Pb ages of the Weilasituo tin-polymetallic deposit in the southern Great Xing an Range and their geological significance[J]. Earth Science Frontiers, 2018, 25(5): 183-201.

[1]	LIU Chiheng, LI Ziying, HE Feng, ZHANG Zilong, LI Zhencheng, LING Mingxing, LIU Ruiping. Quantitative analysis of provenance in the Lower Cretaceous of the northwestern Ordos Basin [J]. Earth Science Frontiers, 2024, 31(3): 80-99.
[2]	CHEN Lei, NIE Xiao, LIU Kai, PANG Xuyong, ZHANG Yingli. Mineralogical and chronological characteristics of the Huoyangou pegmatite Sn(Nb-Ta) deposit in Guanpo, eastern Qinling [J]. Earth Science Frontiers, 2023, 30(5): 40-58.
[3]	ZHANG Liang, ZHANG Heng, GONG Chengqiang, DING Xiaozhong, ZHANG Chuanheng, LIU Yong, GAO Linzhi, LIU Yanxue. Geological characteristics and tectonic background of the Mesoproterozoic ophiolite mélange in central and southern Yunnan [J]. Earth Science Frontiers, 2022, 29(2): 180-197.
[4]	ZHANG Xiaoxu, SU Shangguo, LIU Meiyu, WANG Weizhu. Characteristics and tectonic significance of the early Paleozoic syenite granite from Jinchuan, Gansu Province [J]. Earth Science Frontiers, 2021, 28(4): 283-298.
[5]	TANG Li, ZHANG Shouting, WANG Liang, PEI Qiuming, FANG Yi, CAO Huawen, ZOU Hao, YIN Shaobo. Exploration of concealed fluorite deposit in shallow overburden areas: A case study in Elimutai, Inner Mongolia, China [J]. Earth Science Frontiers, 2021, 28(3): 208-220.
[6]	OUYANG Xin, ZHANG Yongmei, GU Xuexiang, LIU Li, WANG Luzhi, GAO Liye. Characteristics of fluid inclusions in and metallogensis of the Zhuanshanzi gold deposit in Inner Mongolia [J]. Earth Science Frontiers, 2021, 28(2): 320-332.
[7]	CHEN Zehan, ZHANG Jia, ZHAO Zhidan, HAO Sen, ZHANG Liqiang, CAO Yuanbao. Petrogeochemistry and geochronology of biotite monzonitic granites in the Horqin Right Front Banner area, Inner Mongolia and the geological significance [J]. Earth Science Frontiers, 2020, 27(4): 172-183.
[8]	PEI Shengliang, DING Rufu, SHAN Lihua, YANG Wusheng. Zircon U-Pb geochronology and geochemistry of the Kekebieketi basic complex in Fuyun, Xinjiang and the geological significance [J]. Earth Science Frontiers, 2020, 27(4): 184-198.
[9]	ZHANG Bo, SU Shangguo, MO Xuanxue, FENG Shaochong, WU Yue, JIANG Xiao, FENG Yanfang, LIU Jiangtao. Magmatic response to lithospheric thinning of the North China Craton: evidence from porphyritic aegirite-bearing syenite in Wu'an, Hebei, China [J]. Earth Science Frontiers, 2020, 27(3): 168-181.
[10]	ZHANG Dayu, FU Xiang, WEI Ouxiang, YE Longxiang, JIANG Hua, ZHANG Yong, XIN Houtian. Discovery of the Silurian andesitic porphyry in the Xiaohulishan Mo-polymetallic deposit, the Beishan district, Inner Mongolia, and its geological significance [J]. Earth Science Frontiers, 2020, 27(3): 222-238.
[11]	WANG Yinhong, LIU Jiajun, ZHANG Mei, ZHANG Fangfang, WANG Kang, XIAN Xuechen, GUO Lingjun. Fluid inclusion and C-O-S-Pb isotopic studies of the Azhahada Cu-Bi deposit in Inner Mongolia, China [J]. Earth Science Frontiers, 2020, 27(2): 391-404.
[12]	WANG Dazhao, LIU Jiajun, ZHAI Degao, ZHEN Shimin, WANG Jiang. Study on molybdenite Re-Os and zircon U-Pb ages of the Dongping tellurium-gold deposit in Hebei Province [J]. Earth Science Frontiers, 2020, 27(2): 405-419.
[13]	PENG Runmin, WANG Jianping. Confirmation and metallogenesis of the Neoproterozoic rift in the western section of the northern margin of the North China Craton [J]. Earth Science Frontiers, 2020, 27(2): 420-441.
[14]	ZHU Laimin,ZHENG Jun,XIONG Xiao,JIANG Hang,LIU Kai,DING Lele,GUO Yanhui,LI Shenghao. Petrogeochemistry and mineralization potential of the Yuanzijie intrusion in the ZhashuiShanyang ore deposit cluster in southern Qinling [J]. Earth Science Frontiers, 2019, 26(5): 189-205.
[15]	QI Nan,CHEN Yanjing,WANG Pin,WU Yanshuang,XU Chen,ZHAN Enpeng. Zircon U-Pb geochronology and geochemistry of Houhe granite in the Xiaoshan area, southern North China Craton and their implication for regional metallogenic potential [J]. Earth Science Frontiers, 2019, 26(5): 206-221.

LA-ICP-MS cassiterite and zircon U-Pb ages of the Weilasituo tin-polymetallic deposit in the southern Great Xing an Range and their geological significance

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments