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GOLD Mongolia is blessed with a number of important gold deposits which will be developed in joint ventures with new international partners. Substantial proven reserves of both primary and placer gold exist. Most primary deposits are goldsulfide quartz veins, while secondary gold is found associated with copper molybdenum, copper-pyrite, polymetallic, silver and rare metallic ores. The Mongolian Government adopted a Gold Industry Development Program aimed at increasing existing gold production by more than ten times over the present level and creating a gold refining capability. Current major mines in development will dominate in the future. The Boroo deposit measures up to 700m long at the surface and extends 150-300m down dip. The ore bearing zone is 20-40m thick averaging 3-4 gm/t gold. Initial measurements indicate a resource of 40 tons of gold with some silver. Other gold deposits situated near Boroo include those at Narantolgoi, Sujigtei and Tsagaanchuluut. Another gold district soon to be developed is at Zaamar, in the Zaamar hills about 160 km northwest of Ulaanbaatar. Total gold reserves in the Zaamar area are estimated at over 100 tons. Of 150 gold-quartz veins so far explored, twenty are considered commercially exploitable, averaging 20 gms gold. Veins in the hills will be developed as underground mines while the gold in the valleys will be worked as placer operations. The Bumbat hard rock gold ore area is situated 220 km west of Ulaanbaatar in the Tuul river valley. About 150 veins have been discovered in this area of 45 sq. km, and seven of these investigated in detail. Gold deposits discovered range from 100m to 800m in length, and are 100-200m deep with vein thickness of 0.8-3.2m, averaging 7-30 g/t gold. Reserves discovered at Bumbat are about 17 tons of gold. Several other gold deposits have been discovered or evaluated in two main districts: at Hentii (free, a Altat, and Zuunmod) in the north and Bayanhongor (Zedin) in the west. Some gold deposits are operated by the Mongolian-Russian joint venture "Mongolrostsvetmet'' and produce 1.5 tons of gold per year. The Mongolian-Bulgarian joint venture "Mongol-Bulgarmetal" has been successfully mining and processing the Mukhar Ereg alluvial deposits in Bayankhongor Province since 1981. Mongolia Factbook |