Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
- Bench & Fill
- Avoca
- Longitudinal stoping
- Transverse stoping
- Sub-level open stoping (SLOS)
- Cemented paste backfill
- Unconsolidated rockfill
|
Production Start | ... |
Mine Life | 2033 |
The Zinkgruvan Mine comprises a deep underground mine, a processing plant and associated infrastructure and tailings disposal facilities.
The Zinkgruvan Mine is highly mechanized. |
Source:
p. 78
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
- Avoca
- Longitudinal stoping
- Transverse stoping
- Sub-level open stoping (SLOS)
- Cemented paste backfill
- Unconsolidated rockfill
Summary:
Zinkgruvan mines underground from several orebodies. Mine access is principally via three shafts. The primary P2 shaft provides hoisting and man access to the 800 m and 850 m levels with the shaft bottom at 900 m. A ramp system is used to access mine levels below the shaft with the deepest level now approximately 1,270 m below surface. A ramp connecting the underground workings with surface provides direct vehicle access to the mine. The mine is highly mechanized and uses primarily a combination of longitudinal and transverse longhole panel stoping. Stopes are backfilled with either paste tailings and cement or waste rock.
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 horizon for drilling and on the lower level for mucking with remote control L ........
Source:
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Flow Sheet:
Summary:
- subscription is required.
Pipelines and Water Supply
Source:
- subscription is required.
Reserves at December 31, 2023:
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.
Mineral Resources are reported inclusive of Mineral Reserves.
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Proven & Probable
|
Zinc
|
11,036 kt
|
Zinc
|
7.2 %
|
794 kt
|
Proven & Probable
|
Zinc
|
11,036 kt
|
Lead
|
3.3 %
|
363 kt
|
Proven & Probable
|
Copper
|
1,434 kt
|
Copper
|
2.2 %
|
32 kt
|
Proven & Probable
|
Copper
|
1,434 kt
|
Silver
|
35 g/t
|
1,612 koz
|
Proven & Probable
|
Zinc
|
11,036 kt
|
Silver
|
74 g/t
|
26,108 koz
|
Measured & Indicated
|
Zinc
|
17,394 kt
|
Zinc
|
7.8 %
|
1,362 kt
|
Measured & Indicated
|
Zinc
|
17,394 kt
|
Lead
|
3.3 %
|
574 kt
|
Measured & Indicated
|
Copper
|
3,434 kt
|
Copper
|
2.1 %
|
73 kt
|
Measured & Indicated
|
Copper
|
3,434 kt
|
Silver
|
33 g/t
|
3,695 koz
|
Measured & Indicated
|
Zinc
|
17,394 kt
|
Silver
|
73 g/t
|
40,701 koz
|
Inferred
|
Zinc
|
15,700 kt
|
Zinc
|
8.4 %
|
1,319 kt
|
Inferred
|
Zinc
|
15,700 kt
|
Lead
|
3.8 %
|
592 koz
|
Inferred
|
Copper
|
208 kt
|
Copper
|
1.8 %
|
4 kt
|
Inferred
|
Copper
|
208 kt
|
Silver
|
29 g/t
|
193 koz
|
Inferred
|
Zinc
|
15,700 kt
|
Silver
|
91 g/t
|
46,075 koz
|
HME Type | Model | Quantity | Leased or Contractor | Ref. Date | Source |
Cable bolter
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Drill
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Drill
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Drill
|
.......................
|
|
|
Jan 20, 2022
|
p.1
|
Excavator
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Excavator
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Loader (FEL)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Loader (FEL)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Load-Haul-Dump (LHD)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Load-Haul-Dump (LHD)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Rock bolter
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Scaler
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Scraper
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Truck (haul)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Truck (haul)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Truck (haul)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
Truck (water)
|
.......................
|
.......................
|
|
Nov 30, 2017
|
p.126
|
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