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Mongon Tolgoi Mine (Meng'entaoleigai Mine; Meng'entaolegai Mine), Horqin Right Middle Banner (Ke'erqin Youyi Zhongqi), Hinggan League (Xing'an Prefecture), Inner Mongolia Autonomous Region, China

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Name(s) in local language(s): 孟恩陶勒盖银铅锌铟矿床, 科尔沁右翼中旗, 兴安盟, 内蒙古自治区, 中国
Polymetallic (silver-lead-zinc with associated indium and cadmium) veins and stockworks, located along the western junction of the Daxinganling orogenic belt and the Songliao Basin. The deposit area is 6 km long in east-west direction and 200-1000 m wide from north to south. It contains more than 40 ore bodies, hosted in Permian and Jurassic rocks, tuffaceous sandstones, slates, tuffaceous clastic rocks, marbles, arkoses, pelitic siltstones, lavas and bioclastic limestones. Most of them are controlled by EW-and NE-trending faults. Both Hercynian and Yanshannian age granitoids occur: the Meng'entaolegai granite (K-Ar isotopic age: 286 Ma, U-Pb age: 235 Ma) that covers an area of 240 km2, and the Duerji granite complex (U-Pb zircon age: 150 Ma), consisting of coarse-grained biotite-plagioclase granite, granodiorite, moyite, alaskite and fine-grained biotite granite, that covers an area of 150 km2. The deposit formed at temperatures are 140°C to 340°C and is closely related to the Yanshannian Duerji granite.

Sphalerite in this deposit is strongly enriched in cadmium and indium; individual minerals of these elements have not been found, though.

Mineral List

36 entries listed. 28 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Jianzhong Feng (1992): The isotopic characteristics of polymetallic deposits from Huanggangliang to Meng'entaolegai, eastern Inner Mongolia. Liaoning Geology 6(2), 117-126.

Qian Zhang, Xinzhi Zhan, Yuzhuo Qiu, Shuxun Shao, and Zhihao Liu (2002): Lead isotopic composition and lead source of the Meng'entaolegai Ag-Pb-Zn-In deposit in Inner Mongolia. Geochimica 31(3), 253-258 (in Chinese with English abstract).

Jiongfei Zhang, Qingbang Pang, Qun Zhu, and Chengzhu Jin (2003): Mengentaolegai Ag-Pb-Zn deposit in Inner Mongolia: Ar-Ar age of muscovite and its significance. Mineral Deposits 22(3), 253-256 (in Chinese with English abstract).

Qian Zhang, Zhihao Liu, Xinzhi Zhan, and Shuxun Shao (2004): Trace element geochemistry of Meng'entaolegai Ag-Pb-Zn-In deposit, Inner Mongolia, China. Acta Mineralogica Sinica 24(1), 39-47.

Xiaoqing Zhu, Qian Zhang, Yuliang He, and Shuxun Shao (2004): Genesis of Meng'entaolegai Ag-Pb-Zn-In Polymetallic Deposit in Inner Mongolia. Mineral Deposits 23(1), 52-60 (in Chinese with English abstract).

Qian Zhang, Xiaoqing Zhu, Yuliang He, Junjie Jiang, and Dapeng Wang (2006): Indium enrichment in the Meng'entaolegai Ag-Pb-Zn deposit, Inner Mongolia, China. Resource Geology 56(3), 337-346.

Xiaoqing Zhu, Qian Zhamg, Yuliang He, Chaohui Zhu, and Yan Huang (2006): Hydrothermal source rocks of the Meng’entaolegai Ag-Pb-Zn deposit in the granite batholith, Inner Mongolia, China: constrained by isotopic geochemistry. Geochemical Journal 40, 265-275.

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