Alag Bayan, Porphyry copper prospect

Alag Bayan

Porphyry copper prospect in Ömnögovi, Mongolia

Names and other identifiers

GMRAP ID	8121
Alternate names	Alagbayan
Tract name	Oyu Tolgoi (142pCu8506)
Site status	prospect

Geographic location

Country	Mongolia
State or province	Ömnögovi
Geographic location	107.7167, 43.4 (click for info)
Geologic map unit	107.7167, 43.4
Nearby data	List Map

Geologic information

Deposit type	Porphyry copper
Age determination method	Geologic inference
Age range	~290 Ma (Variscan orogeny)
Age reference	geologic inference
Minerals	azurite, chalcopyrite, malachite
Associated rocks	basalt, basaltic tuff, breccia
Tectonic setting	island arc
Stratigraphic age	Early Permian

Commodity and development information

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

Reference information

Comments	Drilling in 2008 confirmed presence of chalcopyrite below 650 m. Small Cu-oxide resource near surface.
Study area name	Central Asian Orogenic Belt
References	Nokleberg and others (1999); Dejidmaa and others (2002); Edison Investment Research Ltd. (2011)
Site reference	Mihalasky, Ludington, Hammarstrom, and others (2015)

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.

Edison Investment Research Ltd., 2011, OutlookCentral Asia Metals: Central Asia Metals PLC Web page accessed February 15, 2012, at http://www.centralasiametals.com/pdfs/CentralAsiaMetals-2011-08-02-100255.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/.)