Oyut Ulaan

Porphyry copper prospect in Dornogovi, Mongolia

Names and other identifiers

Alternate names Oyuut Ulaar Ovoo, Tuviin, Zuun-Khoit
Tract name Oyu Tolgoi (142pCu8506)
Included sites Stariy, Zuun Umnut, Khuuchin
Site status prospect

Geographic location

Country Mongolia
State or province Dornogovi
Geographic location 109.4296, 44.5722
Geologic map unit 109.4296, 44.5722
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 330Ma
Age determination method U-Pb zircon
Age range 330 ±0.5 Ma
Age reference Blight and others (2010)
Minerals azurite, bornite, chalcopyrite, malachite, pyrite
Associated rocks granodiorite porphyry, granosyenite porphyry, syenite porphyry, granite, granosyenite
Tectonic setting island arc
Stratigraphic age Early Carboniferous

Commodity and development information

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

Reference information

Comments 0.3–5.1% Cu and 0.0035–0.006% Mo in 0.25 by 0.7 km bedrock area. Copper and molybdenum mineralization in several altered areas, including a copper-stained tourmaline breccia-pipe complex. An Ivanhoe prospect in 2001–2002; present status not known. Two prospects were grouped with this significant prospect. The original location for these prospects were: Khuuchin (44.583 N latitude and 109.466 E longitude) and Zuun Umnut (44.569 N latitude and 109.502 E longitude).
Study area name Central Asian Orogenic Belt
References Nokleberg and others (1999); Nokleberg and others (2003); Nokleberg and others (2006); Sotnikov and others (1985); Blight and others (2010); Singer and others (2008); Dejidmaa and others (2002); Ivanhoe Mines Ltd. (2001); Blight and others (2008)
Site reference Mihalasky, Ludington, Hammarstrom, and others (2015)
Blight, J.H.S., Cunningham, Dickson, and Petterson, M.G., 2008, Crustal evolution of the Saykhandulaan Inlier, Mongolia—Implications for Palaeozoic arc magmatism, polyphase deformation and terrane accretion in the southeast Gobi mineral belt: Journalof Asian Earth Sciences, v. 32, p. 142–164. (Also available at http://dx.doi.org/10.1016/j.jseaes.2007.10.016.)Blight, J.H.S., Crowley, Q.C., Petterson, M.G., and Cunningham, Dickson, 2010, Granites of the southern Mongolia Carboniferous arc—New geochronological and goechemical constraints: Lithos, v. 116, p. 35–52. (Also available at http://dx.doi.org/10.1016/j.lithos.2010.01.001.)
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.
Ivanhoe Mines Ltd., 2001b, Ivanhoe Mines Ltd. acquires four new copper-gold projects in Mongolia: Ivanhoe Mines Ltd. press release, October 15, 2001, 5 p., accessed December 4, 2013, at http://www.turquoisehill.com/i/pdf/Oct15-2001.PDF.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 http://pubs.usgs.gov/of/1999/of99-165/.)Nokleberg, 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 http://pubs.usgs.gov/of/2003/of03-220/.)Nokleberg, 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 http://pubs.usgs.gov/of/2006/1150/.)Singer, 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 http://pubs.usgs.gov/of/2008/1155/.
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.