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Spain
Cobre Las Cruces Mine

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 Location:
5 km SE from Gerena, Spain

  Regional Office:
Carretera SE-3410 – Km. 4,100 Gerena – Sevilla
Spain
41860
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Fax+34-955-783-241
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeTailings
Commodities
  • Copper
  • Gold
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2024
In 2021, the mine transitioned from open-pit mining to re-processing of high-grade tailings, which is expected to continue until 2023. This retreatment project has the benefit of not only producing some low-cost copper, but more importantly, keeping the existing team in place, as work on the Las Cruces Underground project advances.


Owners

Source: p. 8, 50
CompanyInterestOwnership
First Quantum Minerals Ltd. 100 % Indirect
Cobre Las Cruces, S.A. (operator) 100 % Direct
Cobre Las Cruces S.A. is the owner and operator of the Cobre Las Cruces mine in Spain. Cobre Las Cruces S.A. is an indirect wholly-owned subsidiary of the First Quantum Minerals Ltd.

Contractors

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Deposit Type

  • VMS
  • Breccia pipe / Stockwork


Summary:

The Las Cruces deposit is located within the Iberian Pyrite Belt and classed as a Volcanogenic Massive Sulphide (VHMS) deposit. VHMS mineralisation results from precipitation of metals associated with circulating hydrothermal fluids in volcanically active sub-marine areas. The metals precipitate as sulphides (pyrite/phyrrohtite with variable base metal sulphides such as chalcopyrite, sphalerite and galena) and are inter-layered to varying degrees with volcanic sediments.

The Las Cruces deposit, as per many other VHMS deposits, is characterised by a dipping massive sulphide horizon underlain by a stockwork vein system which are both hosted within shales and felsic volcanics. However, at Las Cruces, post deposition tectonism uplifted the deposit, exposing it to erosion and weathering with partial oxidation of some of the primary sulphides. This resulted in a copper leached gossan, which retained the relatively immobile gold and silver and overly the secondary sulphide horizons. The zones of primary sulphide mineralisation are the source of the current gossan and secondary sulphide zones and are key horizons for defining continuous volumes of similar geology and metal tenor. The zones of gossan, secondary sulphide, primary sulphide and stockwork are used as key domains for Mineral Resource estimation.

Mineralisation is characterised by a notable iron oxide gossan which occurs directly above a welldeveloped, flat lying secondary sulphide zone followed by a ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Since early 2009, Cobre Las Cruces (CLC) operations have mined and processed 14.9 million tonnes of secondary sulfide reserves at 5.12% copper grade from its open pit operation. The available secondary sulfide Mineral Reserve is now depleted. In addition, available stockpiles have 5.0 million tonnes of PPS mineralisation with a copper grade of 1.19%, a zinc grade of 2.21% and a lead grade of 1.63%. There are 2.7 million tonnes of gossan mineralisation stockpiles at 2.58 g/t gold grade. CLC has been in operation for twelve years with all six phases of open pit mining now complete.

The CLC secondary sulfide copper reserves were depleted by end of February 2021. Process performance has been successful and designed copper recoveries were improved upon from several plant modifications developed by CLC. During 2019, CLC committed to extending its activity by re-processing tailings from the secondary copper ore operation. Laboratory test work was completed on old tailings with Cu grades above 1%. Metallurgical performance for copper recovery and consumables were good enough to consider this material amenable for leaching processing in the existing facilities. An economic evaluation was followed by copper cathode production from selected old tailings. An estimated 6.3 million tonnes of tailings with 1% copper will be processed by the plant through to 2023 using existing infrastructure.

The updated Mineral Resource estimate provides for an underground mining opp ........


Crushing and Grinding
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Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Copper t  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required70,73873,66473,643
All production numbers are expressed as cathode. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Ore tonnes mined  ......  Subscription required  ......  Subscription required897 kt1,682 kt2,422 kt1,330 kt
Annual production capacity  ......  Subscription required  ......  Subscription required72,000 t of copper cathode72,000 t of copper cathode
Tonnes processed  ......  Subscription required  ......  Subscription required1,354 kt1,544 kt1,619 kt1,538 kt
Waste  ......  Subscription required  ......  Subscription required2,884 kt14,936 kt14,589 kt13,644 kt
Annual processing capacity  ......  Subscription required  ......  Subscription required1.6 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Mineral Resources at Las Cruces are based upon a 1% TCu and CuEq cut-off grade.

CategoryTonnage CommodityGrade
Measured 19.2 Mt Copper 1.49 %
Indicated 25.7 Mt Copper 1.1 %
Indicated 25.7 Mt Gold 0.27 g/t
Measured & Indicated 44.9 Mt Copper 1.27 %
Measured & Indicated 44.9 Mt Gold 0.15 g/t
Inferred 7.1 Mt Copper 1.23 %

Commodity Production Costs:

CommodityUnits202120202019201820172016
All-in sustaining costs (AISC) Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 1.16 / lb   1.06 / lb   1.01 / lb  
C1 cash costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 0.9 / lb   0.86 / lb   0.81 / lb  
C3 fully allocated costs Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 2.25 / lb   2.15 / lb   1.83 / lb  
Subscription required - Subscription is required.

Financials:

Units2022202120202019201820172016
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 34   22   20  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 470   461   358  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 116   106   59  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 120   102   69  
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 326   316   216  
Subscription required - Subscription is required



Heavy Mobile Equipment as of June 30, 2015:
HME TypeModelSizeQuantityLeased or
Contractor
Excavator ....................... Subscription required 100 t ....................... Subscription required Leased
Loader (FEL) ....................... Subscription required ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 40 t ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 95 t ....................... Subscription required Leased
Truck (haul) ....................... Subscription required 90 t ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 3, 2022
....................... Subscription required ....................... Subscription required Subscription required Jun 3, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2017
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Financial Review 2018
Press Release 2018
Annual Report 2017
Annual Report 2016
Annual Report 2015
Technical Report 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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