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Chile
Quebrada Blanca Mine (Quebrada Blanca Phase 2 (QB2) Project)

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 Location:
162 km SE from Iquique, Chile

  Address:
Esmeralda 340, Piso 10
Iquique
Chile
Phone  ...  Subscription required
Fax56-57-528-264
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StageResidual leach
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2023
Mining operations ceased in the fourth quarter of 2018, and mining equipment and personnel have been redeployed to the Quebrada Blanca Phase 2 (QB2) project. The operation is now focused on secondary copper extraction from previous leach piles.

Copper cathode production is now expected to continue through 2023.


Owners

Source: p. 29
CompanyInterestOwnership
Sumitomo Corp. 5 % Indirect
Empresa Nacional de MinerĂ­a (ENAMI) 10 % Indirect
Sumitomo Metal Mining Co., Ltd 25 % Indirect
Teck Resources Ltd. (operator) 60 % Indirect
Teck holds an indirect 60% interest in QBSA (66.67% of the Series A shares); SMM/SC collectively hold an indirect 30% interest in QBSA (33.33% of the Series A shares) and Empresa Nacional de MinerĂ­a (ENAMI), a Chilean government entity, holds a 10% carried interest (100% of the Series B shares), which does not require ENAMI to fund capital spending.

Contractors

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Deposit Type

  • Vein / narrow vein
  • Breccia pipe / Stockwork
  • Hydrothermal


Summary:

The Quebrada Blanca Cu-Mo sulphide deposit is characterized by a series of Eocene-Oligocene aged intrusions, hydrothermal breccias and vein-related mineralization over and area of approximately 5 kilometers by 3 kilometers and controlled primarily by northeast-oriented structures. Alteration associated with the emplacement of the porphyritic and related intrusions includes chalcopyrite- and bornite-related veins, disseminations, and cement fill associated with potassic alteration. A large, vertically zoned hydrothermal breccia developed in association with potassic event. This breccia has biotite, biotite-magnetite, chalcopyrite and locally bornite preserved at depth, whilst at shallower levels it transitions to a tourmaline-rich breccia with pyrite and chalcopyrite. A series of quartz-molybdenite veins are commonly associated with the biotite-magnetite breccia on the east of the deposit. A subsequent chalcopyrite and molybdenite event cuts across the system and is characterized by grey-green sericite and quartz veins. This type of transitional alteration is best-preserved in the western part of the deposit. A late quartz-sericite-pyrite assemblage cuts the copper-bearing stages, northeast-oriented structures, which were a key control in the location of the supergene mineralization at surface.

The Quebrada Blanca occurs within a 2-kilometer by 5-kilometer quartz monzonite intrusive stock. Supergene enrichment processes have dissolved and redeposited primary (hypoge ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The initial open pit mine at Quebrada Blanca (the Quebrada Blanca Phase 1 operation or QB1) commenced operation in 1994, exploiting supergene copper mineralization. To date, operations at the mine have used a heap leach and dump leach and solvent extraction/electrowinning (SX/EW) process. The supergene ore is now depleted and mining operations ceased in October 2018; however, the SX/EW plant will continue to produce cathodes throughout 2019 and 2020 from existing supergene leaching pads.

The Quebrada Blanca Phase 2 project (QB2) is planned to exploit hypogene mineralization below the supergene mineralization mined in QB1. The environmental impact assessment (EIA) for QB2 was prepared in 2016, and approved by the Chilean environmental authorities in August 2018. The Teck board has approved the QB2 project for full construction, with first production targeted for the second half of 2021.


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

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Production:

CommodityUnits2022202120202019201820172016
Copper kt  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required262335
All production numbers are expressed as cathode. ^ Guidance / Forecast.
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Operational Metrics:

Metrics201820172016201520142013
Total tonnes mined 10,936 kt13,416 kt12,489 kt22,923 kt34,520 kt56,200 kt
Tonnes processed 6,854 kt9,312 kt6,081 kt9,224 kt12,610 kt16,218 kt
Annual production capacity 40 kt of copper cathode

Reserves at December 31, 2021:

CategoryOreTypeTonnage CommodityGradeRecoverable Metal
Proven Sulphide 1,044,400 kt Copper 0.52 %
Proven Sulphide 1,044,400 kt Molybdenum 0.02 %
Proven Sulphide 1,044,400 kt Silver 1.4 g/t
Probable Sulphide 388,800 kt Copper 0.48 %
Probable Sulphide 388,800 kt Molybdenum 0.023 %
Probable Sulphide 388,800 kt Silver 1.2 g/t
Proven & Probable Sulphide 1,433,100 kt Copper 0.51 % 4,010 kt
Proven & Probable Sulphide 1,433,100 kt Molybdenum 0.021 % 140 kt
Proven & Probable Sulphide 1,433,100 kt Silver 1.4 g/t 26,190 koz
Measured Sulphide 890,400 kt Copper 0.37 %
Measured Sulphide 890,400 kt Molybdenum 0.013 %
Measured Sulphide 890,400 kt Silver 1.1 g/t
Indicated Sulphide 2,701,600 kt Copper 0.37 %
Indicated Sulphide 2,701,600 kt Molybdenum 0.018 %
Indicated Sulphide 2,701,600 kt Silver 1.1 g/t
Inferred Sulphide 3,113,200 kt Copper 0.35 %
Inferred Sulphide 3,113,200 kt Molybdenum 0.017 %
Inferred Sulphide 3,113,200 kt Silver 1.1 g/t

Financials:

Units202120202019201820172016
Revenue M CAD  ......  Subscription required  ......  Subscription required  ......  Subscription required 224   182   229  
Gross profit M CAD  ......  Subscription required  ......  Subscription required  ......  Subscription required -59   -107   -211  
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 14, 2022
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Press Release 2018
Annual Information Form 2017
Annual Report 2017
Feasibility Study Report 2017
Press Release 2017
Annual Information Form 2016
Annual Report 2016
Annual Report 2015
Press Release 2015
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