Overview
Status | Inactive / Suspended |
Mine Type | Open Pit |
Commodities |
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Mining Method |
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On March 26, 2020 Polymetal sold Sopka assets for a total consideration of RUB 800 million payable in cash (US$ 10 million) and 1% Net Smelter Return (NSR).
Sopka open pit was fully depleted in Q2 2019. Open-pit mining at Sopka was completed. The mining fleet has re-located to a new satellite deposit, Yolochka (80 km from the Kubaka mill), where mining commenced in 2019.
Expected sale of Sopka low grade ore stockpiles and related mining and exploration licences. |
Source:
p. 1
Company | Interest | Ownership |
Evenskaya GRK
|
|
Indirect
|
Polymetal sold Sopka assets for a total consideration of RUB 800 million payable in cash (US$ 10 million) and 1% Net Smelter Return (NSR).
Contractors
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Deposit Type
- Vein / narrow vein
- Epithermal
Summary:
Sopka Kvartsevaya was discovered in 1969 and is a low sulphidation epithermal gold and silver deposit. It consists of several linear alteration zones enclosing relatively narrow adularia-quartz and quartz-carbonate veins. The main gold-bearing zone extends for 2.2 km dipping at low to moderate angles. It contains five high-grade shoots with adularia quartz veins, enveloped by a wide halo of alteration, which contains low-grade zones. In addition to native gold, the main carriers are electrum and kustelite.
[http://www.minesandprojects.com/reports/annual/Polymetal_International_Sopka_deposits_web_2020.jpg]
Gold–silver mineralization in Northeast Asia is controlled by 9-th volcanic belts of different ages that are superimposed on cratonic, passive continental-margin, island-arc, and oceanic terranes. The brief overview of volcanic belts in Northeast Asia presented in this communication shows that the mineralogy of the epithermal gold-silver deposits in these belts depends on the metallogeny and composition of rocks in structures of the basement and, probably, the Precambrian basement.
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 ........
Summary:
At Sopka, the volume of ore mined increased by 140% to 627 Kt. The open-pit mine life at Sopka has been extended to the second half of 2019 as step-out drilling identified incremental high quality mineralisation that extends into the pit walls.
Source:
Source:
Summary:
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Operational Metrics:
Metrics | 2019 | 2018 | 2017 |
Ore tonnes mined
| 418 kt | 627 kt | 261 kt |
Waste
| | 6.1 Mt | 6.4 Mt |
Reserves at December 31, 2018:
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven
|
3,170 kt
|
Gold
|
1.2 g/t
|
128 koz
|
Proven
|
3,170 kt
|
Silver
|
57 g/t
|
5,842 koz
|
Proven
|
3,170 kt
|
Gold Equivalent
|
1.8 g/t
|
182 koz
|
Probable
|
90 kt
|
Gold
|
4.3 g/t
|
12 koz
|
Probable
|
90 kt
|
Silver
|
137 g/t
|
383 koz
|
Probable
|
90 kt
|
Gold Equivalent
|
5.8 g/t
|
16 koz
|
Proven & Probable
|
3,260 kt
|
Gold
|
1.3 g/t
|
140 koz
|
Proven & Probable
|
3,260 kt
|
Silver
|
59 g/t
|
6,225 koz
|
Proven & Probable
|
3,260 kt
|
Gold Equivalent
|
1.9 g/t
|
199 koz
|
Inferred
|
20 kt
|
Gold
|
3.9 g/t
|
1 koz
|
Inferred
|
20 kt
|
Silver
|
122 g/t
|
43 koz
|
Inferred
|
20 kt
|
Gold Equivalent
|
5.2 g/t
|
2 koz
|
Corporate Filings & Presentations:
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