Naran Bulag

Porphyry copper prospect in Dzavhan, Mongolia

Names and other identifiers

Alternate names Naran bulag, Naranbulag
Tract name Erdenet (142pCu8508a)
Site status prospect

Geographic location

Country Mongolia
State or province Dzavhan
Geographic location 97.7814, 48.5803
Geologic map unit 97.7814, 48.5803
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 273Ma
Age determination method Geologic inference
Age range 273 Ma
Age reference Badarch and others (1999)
Minerals chalcopyrite, galena, magnetite, molybdenite, pyrite, sericite, sphalerite
Associated rocks granite, granite porphyry, granodiorite porphyry, diorite porphyry
Tectonic setting continental margin
Stratigraphic age Permian

Commodity and development information

Development status Prospect
Major commodities Cu
Minor commodities Mo
Gold-Moly ratio -9999

Reference information

Comments Average grade of 0.08% Cu, 0.0005% Mo in granite porphyry; 0.03 % Cu, 0.001% Mo in granodiorite porphyry; 0.01% Cu and up to 0.001% Mo in diorite. Consists of a Early Cambrian sedimentary and volcanic unit intruded by Middle to Late Cambrian Telmen Complex, the Late Devonian Tes Complex and Late Permian dikes. The thickness of the formation ranges up to 1055 m. Most of deposit consists of intrusive rock of the Telmen Complex. Deposit extends 2.0 km on surface and is approximately 200 m wide. There are nine areas of dissemination and stringers of Cu minerals . The fault zone includes the Naranbulag occurrence (25 km SW) and other Cu minerals occurring N of the latter and explosive bodies.
Study area name Central Asian Orogenic Belt
References Dejidmaa and others (2002); Singer and others (2008); Nokleberg and others (1999); Nokleberg and others (2003); Nokleberg and others (2006); Sotnikov and others (1985); Badarch and others (1999)
Site reference Mihalasky, Ludington, Hammarstrom, and others (2015)
Badarch, G., Makhbadar, Ts., Orolmaa, D., and Khosbayar, P., comps., 1998, Geological map of Mongolia: Ulaanbaatar, Mongolia Mineral Resources Authority, Geological Survey, and Mongolian Academy of Sciences, Institute of Geology and Mineral Resources, 12 sheets, scale 1:1,000,000. (Also available at
Dejidmaa, G., Bujinlkham, B., Ganbaatar, T., Oyuntuya, N., Enkhtuya, B., Eviihuu, A., and Monkh-Erdene, N., 2002, Distribution map of mineral deposits and occurrences in Mongolia: Ulaanbaatar, Mongolia Mineral Resources Authority, Geologic Information Center, 540 p., 12 sheets, scale 1:1,000,000.
Nokleberg, W.J., Naumova, V.V., Kuzmin, M.I., and Bounaeva, T.V., eds., 1999, Preliminary publications book 1 from project on mineral resources, metallogenesis, and tectonics of northeast Asia: U.S. Geological Survey Open-File Report 99-165, 6 p. and digital data, CD-ROM. (Also available at, W.J., Bounaeva, T.M., Miller, R.J., Seminskiy, Z.V., and Diggles, M.F. eds., 2003, Significant metalliferous and selected non-metalliferous lode deposits, and selected placer districts of northeast Asia: U.S. Geological Survey Open-File Report 03-220, 422 p., CD-ROM. (Also available at, W.J., Miller, R.J., and Diggles, M.F., eds., 2006, Geographic information systems (GIS) spatial data compilation of geodynamic, tectonic, metallogenic, mineral deposit, and geophysical maps and associated descriptive data for northeast Asia: U.S. Geological Survey Open-File Report 2006-1150, 11 p. and digital data, CD-ROM. (Also available at, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at
Sotnikov, V.I., Berzina, A.N., Zhamsran, M., Garamzhav, D., and Bold, D., 1985, Copper deposits of Mongolia: Novosibirsk, Nauka, Transactions of the Joint Soviet-Mongolian Scientific-Research Expedition, v. 43, 223 p.