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Nam Co (Nam Tso; Namu Cuo; Tengri Nor), Baingoin Co. (Bange Co.), Nagchu Prefecture (Naqu Prefecture), Tibet Autonomous Region, China

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Latitude & Longitude (WGS84): 30° 45' North , 90° 30' East
Latitude & Longitude (decimal): 30.75000,90.50000
Name(s) in local language(s):纳木错, 班戈县 (དཔལ་མགོན་རྫོང་), 那曲地区 (ནག་ཆུ་ས་ཁུལ་), 西藏自治区, 中国

A large saline lake and associated saline and brackish marshes on the southeastern edge of the Qiangtang basin. The lake is fed by streams from the Nyainqentanghla mountains to the south. The lake was formerly much larger in size, but is now in the process of drying out.

Nam Co is the biggest salt lake of Tibet. Its surface area approximates 700 square miles (1813 square km) and straddles the border of Damxung and Baingoin counties. Both the Tibetan name, "Nam Co", and the Mongolian name, "Tengri Nor", translate to "Heavenly Lake".

Located about 120 km NW of Lhasa, 15,186 ft. (4629 m) above sea level.

Mineral List

6 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

66 - 145 Ma
Cretaceous sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

This page 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.


Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 340.

Williams, W.D. (1991): Chinese and Mongolian saline lakes: a limnological overview. Hydrobiologia 210(1/2), 39-66.

Minghui Li, Shichang Kang, Liping Zhu, Junbo Wang, Qianggong Zhang, Manping Xie, and Qinglong You (2008): Late Holocene lake environment reflected by the occurrence of monohydrocalcite in Nam Co, central Tibet. Quaternary Sciences 51(4), 601-609 (in Chinese with English abstract).

Minghui Li, Shichang Kang, Liping Zhu, Qinglong You, Qianggong Zhang, and Junbo Wang (2008): Mineralogy and geochemistry of the Holocene lacustrine sediments in Nam Co, Tibet. Quaternary International 187, 105-116.

Ning Wang, Weiguo Liu, Liming Xu, and Zhisheng An (2008): Oxygen isotopic compositions of carbonates of modern surface lacustrine sediments and their affecting factors in Tibet plateau. Quaternary Sciences 28(4), 591-600 (in Chinese with English abstract).

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