Olympiada

Olympiada deposit was discovered in 1975 and entered full-scale production stage shortly after – in early 80s.

Olympiada deposit is located in 600 km north from Krasnoyarsk in the Severoeniseysk area of Krasnoyarsk region, 80 km away form the city of Severoeniseysky. The deposit is composed of heterogeneous terrigenous carbon rocks and is circled by outcrops of orogenic granitoid intrusions of tatar-ayakhtinsk complex. Both primary and oxide ores are present in the deposit. The main ore body, which accounts for 90% percent of gold reserves, is located in the Eastern part of the deposit. On surface level the ore body is 600 m long in the northern wing of the fold and 600 m long in the southern wing of the fold. Thickness of the body in the curve of the fold is 400 m. The ore belongs to impregnated and veinlet-impregnated types. Gold mineralization mostly consists of pyrrotine and arsenopyrite with constant admixture of pyrite. Mixed type and antimony mineralization occurs less frequently. Gold is thinly dispersed and connected to sulfides which are found in isolated occurrences and clusters. Most often gold is found in arsenopyrite and on contacts of arsenopyrite with host rock or with inclusions of pyrrotine.

Oxide ores are represented by multicolored argillaceous-silt loose formations tracing linear weathering crusts of Cretaceous-Palaeogene age which occur along folded zones of contacts between ore-bearing terrigenous and terrigenous-carbon sequences. Gold in oxide ores occurs in free metallic form and is easy to extract.

Currently total resources and reserves of the deposit by C1 and C2 categories are estimated at 417 tons of gold.