gabbro and hornblendite stocks intrude gneiss, schist and amphibolite
Commodity and development information
Four main ore zones form an EW trend with average grades of (1) 0.36% Cu, 0.039% Ni and 0.04% Co; (2) 0.52% Cu, 05% Ni and 0.006% Co, with two samples containing 0.16 g/t Pd and 0.4 g/t Au; (3) 0.27% Cu and 0.031% Ni; and (4) 0.38-0.78% Cu. Consists of Cu sulfides in a Middle Cambrian gabbro and hornblendite stocks that occur along the Khangai fault system for 6.0 km and ranges up to 1.5 km wide. The sulfides occur around of amphibole grains, and in rare small nests and disseminations in quartzand quartz-feldspar veins in outer contact zone of some small stocks. See Nokleberg and others (2003) for additonal information. Middle Cambrian gabbro and hornblendite stocks intrude Paleoproterozoic gneiss, schist and amphibolite.
Study area name
Central Asian Orogenic Belt
Nokleberg and others (1999); Nokleberg and others (2003); Hedenquist and Daneshfar (2003); United Nations (1999)
Mihalasky, Ludington, Hammarstrom, and others (2015)
Hedenquist, J.W., and Daneshfar, B., 2003, Mineral potential of central and east Asia, in Basis for mining investment in transition economy countries: Washington, D.C., Mining Journal Publishing, World Bank Group, Mining Department, 79 p.
United Nations, 1999, Geology and mineral resources of Mongolia: New York, United Nations, Economic and Social Commission for Asia and the Pacific (ESCAP), Atlas of Mineral Resources of the ESCAP Region, v. 14, 192 p., scale 1:3,000,000.