Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
|
Production Start | ... |
Mine Life | 2024 |
Source:
p. 87
Polymetal International plc holds Dukat hub through its 100% subsidiary Magadan Silver JSC.
Contractors
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Summary:
Lunnoye
Zone 9 comprises five ore bodies with a total strike length of approximately 1,900 m and width varying from 2 m to 12 m. Vertically dipping mineralisation is structurally adjacent to the Lunnoye fault (located in its footwall) and is heavily brecciated in places. The most important ore mineral is quartz. Silver is present in the form of sulphides and sulphosalts, while gold is mostly found in free form. The quartz has a distinct white colour and is easy to identify visually. Silver and particularly gold grade distribution within the ore body are highly erratic, requiring significant in-fill and grade control drilling.
The Okhotsk-Chukot volcanic belt formed over 25 Ma (middle Albian-Cenomanian) (Belyi, 1994) at the boundary between the continental Verkhoyansk-Chukot and Koryak-Kamchatka terranes. This giant belt is 3000 km long is composed of subaerial volcanic rocks. Relative to the oceanic margin, the Okhotsk-Chukot belt is divided into the inner, outer, and perivolcanic zones. The intricate structure of terranes of the basement and the Okhotsk-Chukot belt produced a diversity of epithermal deposit types. The inner zone of the belt mainly accommodates porphyry Cu-Mo deposits. The outer and perivolcanic zones include gold-silver and silver-tin ore deposits. The gold-silver subtype is more widespread in the outer zone (Karamken, Valunisty, Kupol, and Dvoinoi). Deposits of the silver subtype (Dukat, Lunnyi, Arylakh, Golcovy and others) are confined to t ........
Summary:
The Lunnoye mine is accessible by two declines driven from the flanks of the ore body. A 10 m crown pillar separates the underground mine from the depleted pit. Underground conditions at the Lunnoye mine are challenging due to the proximity of the fault and, in some places, the significant brecciation of ore and hanging wall, which necessitate significant support structures. Most permanent underground workings are supported either by steel frames, where stability is poor, or by steel anchors and shotcrete, where conditions are moderate. Open stopes are supported by wire mesh and anchors. Ground conditions tend to improve at the lower levels of the mine as the ore body becomes more distant from the fault.
Both underground development and stoping at Lunnoye are fully mechanised, with the use of trackless equipment for drilling (long-hole production drill rigs and development jumbos), mucking (LHDs), and trucking (underground trucks). Ore is transported directly to the surface and then to the processing plant by contractors.
Source:
Summary:
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Production:
Commodity | Units | 2020 | 2019 | 2018 | 2017 |
Gold
|
koz
| ...... | | 0 | 0 |
Silver
|
koz
| ...... | ...... | ...... | ...... |
All production numbers are expressed as metal in doré.
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Operational Metrics:
Metrics | 2020 | 2019 | 2018 | 2017 |
Tonnes processed
| ...... | | | |
Ore tonnes mined
| ...... | 512 kt | 568 kt | 573 kt |
Reserves at January 1, 2021:
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
990 kt
|
Gold
|
1.2 g/t
|
38 koz
|
Proven
|
990 kt
|
Silver
|
289 g/t
|
9,273 koz
|
Proven
|
990 kt
|
Gold Equivalent
|
4.7 g/t
|
150 koz
|
Probable
|
590 kt
|
Gold
|
2.3 g/t
|
43 koz
|
Probable
|
590 kt
|
Silver
|
190 g/t
|
3,576 koz
|
Probable
|
590 kt
|
Gold Equivalent
|
4.6 g/t
|
86 koz
|
Proven & Probable
|
1,580 kt
|
Gold
|
1.6 g/t
|
81 koz
|
Proven & Probable
|
1,580 kt
|
Silver
|
253 g/t
|
12,849 koz
|
Proven & Probable
|
1,580 kt
|
Gold Equivalent
|
4.6 g/t
|
236 koz
|
Measured
|
550 kt
|
Gold
|
1.8 g/t
|
32 koz
|
Measured
|
550 kt
|
Silver
|
433 g/t
|
7,575 koz
|
Measured
|
550 kt
|
Gold Equivalent
|
7.1 g/t
|
123 koz
|
Indicated
|
80 kt
|
Gold
|
2.2 g/t
|
6 koz
|
Indicated
|
80 kt
|
Silver
|
325 g/t
|
863 koz
|
Indicated
|
80 kt
|
Gold Equivalent
|
6.1 g/t
|
16 koz
|
Measured & Indicated
|
630 kt
|
Gold
|
1.8 g/t
|
38 koz
|
Measured & Indicated
|
630 kt
|
Silver
|
410 g/t
|
8,438 koz
|
Measured & Indicated
|
630 kt
|
Gold Equivalent
|
6.8 g/t
|
139 koz
|
Inferred
|
270 kt
|
Gold
|
1.5 g/t
|
13 koz
|
Inferred
|
270 kt
|
Silver
|
425 g/t
|
3,575 koz
|
Inferred
|
270 kt
|
Gold Equivalent
|
6.7 g/t
|
56 koz
|
Total Resource
|
900 kt
|
Gold
|
1.7 g/t
|
51 koz
|
Total Resource
|
900 kt
|
Silver
|
414 g/t
|
12,013 koz
|
Total Resource
|
900 kt
|
Gold Equivalent
|
6.7 g/t
|
195 koz
|
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