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Chile
Zaldivar Mine

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 Location:
150 km SE from Antofagasta, Chile

  Address:
Av. Grecia # 750
Antofagasta
Chile
Phone  ...  Subscription required
Fax56-55-2433445
EmailEmail
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
Mining Method
  • Truck & Shovel / Loader
Processing
  • Bacterial leaching
  • Sulfuric acid (reagent)
  • Flotation
  • Heap leach
  • ROM/dump leach
  • Solvent Extraction & Electrowinning
Mine Life15 years (as of Jan 1, 2014)


Owners & OPERATOR

Source: p. 1
CompanyInterestOwnership
Barrick Gold Corp. 50 % Indirect
Antofagasta plc. (operator) 50 % Indirect
Companía Minera Zaldívar Ltda. 100 % Direct
Zaldívar is a 50/50 joint venture operation with Antofagasta Plc. Antofagasta is the operator of the mine.

Deposit Type

  • Porphyry


Summary:

The Zaldívar porphyry copper deposit is situated on the western margin of the Atacama Plateau in northern Chile. The deposit is part of a large Tertiary porphyry copper system which includes the scondida porphyry copper deposit. This porphyry complex occurs within the large West Fissure structural system which controls most of the large porphyry copper deposits in Chile. The Zaldívar porphyry system is at the intersection of the West Fissure and a series of Northwest and Northeast striking faults. The deposit is generally centered on a Northeast striking granodiorite porphyry body that intrudes andesites and rhyolites, and cuts across the north-south striking Portezuelo fault. Although the geology and the Zaldívar mineral deposit are generally continuous from east to west, the orebody was arbitrarily divided into two zones: the Main zone (area east of 93,000E) and the Pinta Verde zone (area west of 93000E).

The Zaldívar orebody contains both sulfide and oxide copper mineralization. The majority of the copper occurs in a blanket of oxide (covering an area of approximately 2 kilometers by 1.5 kilometers with an average thickness of approximately 90 meters) and secondary sulfide ore (covering an area of approximately 2.5 kilometers by 1.5 kilometers with variable thickness from a few meters in the southwest extremity to over 300 meters in the northeast extremity) which overlays deeper primary sulfide mineralization of lower grade. The economically important mineralization types are secondary sulfide (chalcocite), oxide (brochantite and chrysocolla) and a mixed mineralization type of combined sulfide and oxide copper minerals. Primary sulfide mineralization consists of pyrite, chalcopyrite, bornite and molybdenite.

In the Main zone orebody, to the east of the Portezuelo fault, rhyolite is the host rock and secondary sulfide mineralization is dominant (85% to 90%) with the balance of the copper present as oxide minerals. West of the fault, andesite and granodiorite are the host rocks and the copper is present as a mixture of both oxide and secondary sulfide minerals.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Zaldívar Mine is a traditional open pit truck/shovel operation. The ultimate pit will measure approximately 2.8 km east to west, 2.6 km north to south, and have a maximum depth of approximately 630 m. Waste and ore are mined on 15 m benches.


Crushing and Grinding


Processing

  • Bacterial leaching
  • Sulfuric acid (reagent)
  • Flotation
  • Heap leach
  • ROM/dump leach
  • Solvent Extraction & Electrowinning

Source: Subscription required

Summary:

Pure cathode copper is produced by three stages of crushing and stacking of ore, followed by heap leaching and bacterial activity to remove the copper from the ore into solution. Run of mine dump leach material is placed on the old sulfide ore pad, and is also leached. A solvent extraction and electro-winning process then removes the copper from solution and produces the cathode copper. A flotation plant is also used to recover copper, in the form of copper concentrate, contained in the fine material produced in the tertiary crushing process. The heap leach cycle time is approximately 330 days.

Recoveries & Grades:

CommodityParameter201820172016201520142013
Copper Head Grade, % 0.60.590.50.530.50.5

Production:

CommodityUnits201920182017201620152014
Copper M lbs  ......  Subscription required  ......  Subscription required228228218222
All production numbers are expressed as cathode.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201820172016201520142013
Total tonnes mined  ......  Subscription required  ......  Subscription required68,700 kt59,502 kt60,769 kt67,419 kt
Ore tonnes mined  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required
Stripping / waste ratio  ......  Subscription required  ......  Subscription required0.61
Tonnes processed  ......  Subscription required  ......  Subscription required36,326 kt36,979 kt39,827 kt47,732 kt
Subscription required - Subscription is required.

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven 252,780 kt Copper 0.461 % 2,568 M lbs
Probable 214,704 kt Copper 0.467 % 2,210 M lbs
Proven & Probable 467,484 kt Copper 0.464 % 4,778 M lbs
Measured 203,682 kt Copper 0.342 % 1,534 M lbs
Indicated 103,712 kt Copper 0.333 % 760.6 M lbs
Measured & Indicated 307,394 kt Copper 2,295 M lbs
Inferred 43,750 kt Copper 0.255 % 245.8 M lbs

Commodity Production Costs:

CommodityUnits2019201820172016201520142013
All-in sustaining costs (AISC) Copper USD  ......  Subscription required ^  ......  Subscription required 2.21 / lb 2.05 / lb 2.11 / lb 2.3 / lb
C1 cash costs Copper USD  ......  Subscription required ^  ......  Subscription required 1.66 / lb 1.55 / lb 1.74 / lb 1.79 / lb 1.65 / lb
^ Guidance / Forecast.
Subscription required - Subscription is required.

Financials:

Units201520142013
Capital expenditures M USD 85   111   80  
Revenue M USD 528   711  
EBITDA M USD 154   297   520  


Heavy Mobile Equipment as of April 8, 2014:
HME TypeModelQuantity
Dozer ....................... Subscription required 4
Dozer (crawler) ....................... Subscription required 9
Drill ....................... Subscription required 3
Excavator ....................... Subscription required 1
Grader ....................... Subscription required 2
Loader ....................... Subscription required 2
Loader ....................... Subscription required 1
Shovel (hydraulic) ....................... Subscription required 3
Truck (haul) ....................... Subscription required 17
Truck (haul) ....................... Subscription required 15
Truck (haul) ....................... Subscription required 6
Truck (haul) ....................... Subscription required 1
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 26, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 26, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 26, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2018
................................... Subscription required 2018
Other 2017
Quarterly Report 2017
Management Discussion & Analysis 2016
Other 2016
Press Release 2016
Annual Report 2015
Other 2015
Annual Report 2014
Corporate Presentation 2014
Form 40-F 2014
Other 2014
Technical Report 2012
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Aerial view:

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