Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Bench & Fill
- Sub-level open stoping (SLOS)
- Avoca
- Paste backfill
|
Production Start | ...  |
Mine Life | 10 years (as of Jan 1, 2022) |
The Zinkgruvan Mine comprises a deep underground mine, a processing plant and associated infrastructure and tailings disposal facilities. |
Source:
p. 87
The Zinkgruvan Mine is owned and operated by Zinkgruvan Mining AB which is a 100% indirect subsidiary of Lundin Mining.
Contractors
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Deposit Type
- Breccia pipe / Stockwork
- Hydrothermal
Summary:
The Zinkgruvan deposit comprises a stratiform, massive zinc-lead deposit hosted by K-rich metatuffites with intercalated beds of marble, dolomite and fine grained quartzite. A zone of stratified disseminated pyrrhotite mineralisation occurs 100m stratigraphically above the zinc-lead mineralisation while in the central part of the deposit the zinc-lead mineralisation is stratigraphically underlain by a substratiform copper stockwork.
The deposit exhibits distinctive stratification and extends for more than 5km along strike and to depths of 1,600m. Deformation during the Svecofennian orogeny included isoclinal folding which has resulted in the stratigraphy of the area being overturned. The property geology is also divided into two distinct areas by the regional northnortheast to south-southwest trending Knalla fault. These areas, which make up the Zinkgruvan deposit, are known as Nygruvan area and Knalla area. The Nygruvan area is bounded to the east by the Sinsberg fault beyond which felsic metavolcanics and early orogenic granites are encountered. The Knalla area is bounded to the west by the Dalby fault beyond which post-orogenic granites are encountered.
The Nygruvan and Knalla areas of the Zinkgruvan deposit are located on both flanks of a synclinal structure and separated by the Knalla fault. The Nygruvan area is located to the east of the Knalla fault and provided the majority of the historical production at Zinkgruvan. The Nygruvan area strikes ge ........

Mining Methods
- Bench & Fill
- Sub-level open stoping (SLOS)
- Avoca
- Paste backfill
Summary:
Mine access is currently via three shafts, with the principal P2 shaft providing ore and waste rock hoisting as well as labour access to the -800m and -850m levels. The “daylight” ramp connects the surface and the underground working the “western areas”, providing direct vehicle access from surface to the mine. A system of further ramps is employed to access and hence exploit mineral reserve below the shaft. The mine is highly mechanised, utilising the best available technologies to control operations. Longhole panel and sub level bench stoping are emloyed throughout the mine. All stopes are backfilled with either cemented paste tailings or waste rock. Mining has currently reached the -1,250m level.
There are four excavation or stoping methods utilised at the Zinkgruvan mine, transverse bench and fill, sub level open stoping (“SLOS”) mining, a modified Avoca mining method and underhand bench and fill (in this case the term underhand refers to the mining sequence not stope drilling orientation).
Transverse Bench and Fill (Panel Mining)
In the Burkland zone, long hole transverse bench and fill stoping (locally known as panel mining) is used with a sequence of primary and secondary stopes. Stope dimensions are nominally 20m high by 30m wide for the primary stopes and 20m wide for the secondary stopes. Stope access is typically developed in the footwall from the ramp system with this development at 5m x 5m size. Stope accesses are developed on the upper ........

Source:

- subscription is required.
Flow Sheet:
Summary:

- subscription is required.
Production:
Commodity | Product | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Zinc
|
Metal in concentrate
|
t
| ...... ^ | ......  | ......  | ......  | ......  | 76,606 | 77,963 |
Copper
|
Metal in concentrate
|
t
| ...... ^ | ......  | ......  | ......  | ......  | ......  | ......  |
Zinc
|
Concentrate
|
kt
| | ......  | ......  | | | | |
Lead
|
Metal in concentrate
|
t
| | ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Concentrate
|
kt
| | ......  | ......  | | | | |
Copper
|
Concentrate
|
kt
| | ......  | ......  | | | | |
Silver
|
Metal in concentrate
|
koz
| | ......  | ......  | ......  | ......  | ......  | ......  |
^ Guidance / Forecast.
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Operational Metrics:
Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Annual processing capacity
| ......  | ......  | 1.4 Mt | 1.7 Mt | 1.7 Mt | 1.7 Mt |
Ore tonnes mined
| ......  | ......  | 1,423 kt | 1,320 kt | 1,300 kt | 1,281 kt |
Waste
| ......  | ......  | | | | |
Total tonnes mined
| ......  | ......  | | | | |
Tonnes milled
| ......  | ......  | 1,389 kt | 1,298 kt | 1,313 kt | 1,264 kt |
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Reserves at December 31, 2022:
The zinc Mineral Resources are estimated within optimized stope volumes, using a 3.5 m minimum mining width, based on an area dependent marginal NSR cut-off between SEK 515/t and SEK 710/t.
The zinc and copper Mineral Reserves are estimated at NSR cut-off values ranging from SEK 750/t to SEK 950/t NSR.
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Proven & Probable
|
Zinc
|
9,304 kt
|
Zinc
|
7.9 %
|
739 kt
|
Proven & Probable
|
Zinc
|
9,304 kt
|
Lead
|
3.3 %
|
306 kt
|
Proven & Probable
|
Copper
|
1,683 kt
|
Copper
|
2.2 %
|
37 kt
|
Proven & Probable
|
Zinc
|
9,304 kt
|
Silver
|
69 g/t
|
20,596 koz
|
Proven & Probable
|
Copper
|
1,683 kt
|
Silver
|
34 g/t
|
1,818 koz
|
Measured & Indicated
|
Zinc
|
17,764 kt
|
Zinc
|
8.1 %
|
1,439 kt
|
Measured & Indicated
|
Zinc
|
17,764 kt
|
Lead
|
3.3 %
|
592 kt
|
Measured & Indicated
|
Copper
|
3,781 kt
|
Copper
|
2.1 %
|
81 kt
|
Measured & Indicated
|
Copper
|
3,781 kt
|
Silver
|
34 g/t
|
4,133 koz
|
Measured & Indicated
|
Zinc
|
17,764 kt
|
Silver
|
69 g/t
|
39,408 koz
|
Inferred
|
Zinc
|
17,626 kt
|
Zinc
|
8.3 %
|
1,471 kt
|
Inferred
|
Zinc
|
17,626 kt
|
Lead
|
4 %
|
710 kt
|
Inferred
|
Copper
|
261 kt
|
Copper
|
1.7 %
|
4 kt
|
Inferred
|
Copper
|
261 kt
|
Silver
|
27 g/t
|
227 koz
|
Inferred
|
Zinc
|
17,626 kt
|
Silver
|
91 g/t
|
51,569 koz
|
Pipelines and Water Supply
Source:

- subscription is required.
HME Type | Model | Quantity | Leased or Contractor | Ref. Date |
Cable bolter
|
.......................
|
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Nov 30, 2017
|
Drill
|
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Nov 30, 2017
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Drill
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Nov 30, 2017
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Drill
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|
Jan 20, 2022
|
Excavator
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Nov 30, 2017
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Excavator
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Nov 30, 2017
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Loader (FEL)
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Nov 30, 2017
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Loader (FEL)
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Nov 30, 2017
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Load-Haul-Dump (LHD)
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Nov 30, 2017
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Load-Haul-Dump (LHD)
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.......................
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Nov 30, 2017
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Rock bolter
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Nov 30, 2017
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Scaler
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Nov 30, 2017
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Scraper
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Nov 30, 2017
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Truck (haul)
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Nov 30, 2017
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Truck (haul)
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Nov 30, 2017
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Truck (haul)
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Nov 30, 2017
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Truck (water)
|
.......................
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Nov 30, 2017
|
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Corporate Filings & Presentations:
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