Tolubay
The Tolubay licence area covers 46.4 square kilometres and is situated in the south-western region of the Kyrgyz Republic in an area with year-round access, 74km west-southwest of Osh.
Historically the area is characterised by extensive Soviet mercury production and exploration adits along the Chauvai Valley to the east of Obdilla which are associated with extensive but generally low grade gold mineralisation, and some significant stronger gold including a channel sampling result of 32m @ 3.7g/t gold at Tolubay by Phelps Dodge in 1998.
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An orientation soil and rock chip sampling program undertaken over the Tolubay licence area in 2005 outlined the strongest gold anomaly at Obdilla Prospect 6km. Trenching and geophysical surveying at the Obdilla Prospect outlined a zone of gold mineralisation extending for about 2,000m and over widths of 50m to 200m.
Obdilla
Obdilla was the first discovery made in the Kyrgyz Republic by Perseus and has so far yielded a resource of nearly 500,000 ounces of gold.
Significant opportunities to expand this resource exist through a systematic drilling campaign both within the main resource area and along strike. Gold mineralisation at Obdilla, as exposed in outcrop and trenches, and intersected in drilling, extends for some 2km east-west along strike as part of a more extensive gold anomalous horizon that extends east past Chauvai for 15km.
The Obdilla deposit appears to be part of a large mineralised system in a geological setting which is highly prospective for large scale sediment hosted gold deposits.
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Pictured:Obdilla viewed from the east
Two campaigns of metallurgical testwork at Obdilla has shown that the Obdilla mineralisation is not amenable to direct cyanidation using standard CIL technology. Flotation testwork has shown that sulphide concentrate can be produced from the Obdilla mineralisation, however the sulphide concentrate was not amenable to gold extraction by cyanide leach, but requires a refractory process route such as bio-oxidation or ultra-fine grind followed by oxidising leach (Albion process).
The most recent testwork carried out on the Obdilla concentrate concluded that the BIOX process route is the preferred technology to process refractory concentrates from the Obdilla Carlin trend type ore.
Obdilla is a significant gold deposit and resource definition has proceeded to a stage where a development study to investigate mining and process routes for the deposit is justified.
Manas’s strategy is to extensively drill the current resource area and its extensions with the view of adding significant resource ounces in conjunction with conducting further mining and processing studies on amenable production routes.
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