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Peru
Quellaveco Mine

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 Location:
35 km NE from Moquegua, Peru

  Regional Office:
Esquilache Building Calle Esquilache 371 - piso 10 San Isidro
Lima
Peru
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
  • Heap leach
  • Cyanide (reagent)
Mine Life36 years (as of Jan 1, 2021)
Quellaveco project is one of the world’s largest untapped copper orebodies.
Latest NewsAnglo American kicks off commissioning at Quellaveco copper project     June 9, 2022


Owners

Source: p. 24
CompanyInterestOwnership
Mitsubishi Materials Corp. 40 % Indirect
Anglo American plc. 60 % Indirect
Quellaveco is a joint venture between Anglo American (60%) and Mitsubishi (40%).

Deposit Type

  • Porphyry


Summary:

The Quellaveco deposit, located near the northern end of the Paleocene to early Eocene porphyry copper belt of the central Andes (Sillitoe, 1988; Clark et al., 1990), is centered on a multiphase quartz monzonite porphyry stock emplaced into an equigranular granodiorite pluton, which itself cuts rhyolitic volcanic rocks assigned to the Late Cretaceous to early Paleocene Toquepala Group (Estrada, 1975; Guerrero and Candiotti, 1979; Candiotti, 1995). The pluton, which crops out over >3 km2 in the vicinity of the Quellaveco stock, as well as extending northward beneath postmineral ignimbrite and gravel cover, is part of the granodioritic to monzogranitic Yarabamba superunit of the Coastal batholith (Pitcher, 1985). Phenocrysts in the porphyries are made up of abundant plagioclase, quartz, and biotite, plus scattered K-feldspar and hornblende, all surrounded by aplitic groundmass.

Potassic (biotite-K-feldspar) and sericitic (quartz-sericite) alteration, the former generally overprinted and partly obliterated by the latter, developed extensively throughout much of the quartz monzonite porphyry stock and immediately surrounding granodiorite, and both contain veinlet and disseminated chalcopyrite. The potassic alteration is transitional outward in the precursor granodiorite to a pyrite-bearing propylitic assemblage, which defines the periphery of the system (Estrada, 1975; Candiotti, 1995; Kihien, 1995). Fluid inclusion studies showed that the main potassic and sericitic alteration and associated copper mineralization took place at temperatures of 590° to 340°C (Kihien, 1995).


Mining Methods

  • Truck & Shovel / Loader


Summary:

Mining from the Quellaveco deposit will involve excavation of a huge open-pit. The final pit dimensions are anticipated to be: approximately 3000m (N-S) by 1700m (E-W), and 930m deep.

Mining of the ore body by open pit methods will require diversion of the Asana River around the Quellaveco deposit via a canal and tunnel system 7.2 km long, returning the flow downstream of the proposed waste rock disposal area.

Excavation of the pit will produce more than a million tons of waste rock, which will be deposited in the Asana River riverbed, downgradient of the open pit and the subsequent pit lake. Waste rock piles will reach an average height of 320m.

After mine closure, the pit will fill with water forming a lake with a maximum depth of about 384m.


Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
SAG mill 2
Ball mill 2

Summary:

Two grinding lines: one SAG and one Ball Mill each, with space for third line.


Processing

  • Flotation
  • Heap leach
  • Cyanide (reagent)

Source: Subscription required

Summary:

The primary crusher will be located adjacent to the pit in the Quellaveco valley, from where ore will be conveyed to a coarse ore stockpile in the adjacent Papujune valley.

The processing will be similar to that used at other copper porphyry processing facilities around the world, and will be essentially the same as that performed at SPCC’s Cuajone and Toquepala facilities.

These facilities use cyanide as one of the main flotation reagents to separate the copper from molybdenum and selected other metals.

MQSA decides to commercially extract copper from the waste rock piles using leaching procedures.


Production:

CommodityUnits2022Avg. Annual (Projected)LOM (Projected)
Copper kt  ......  Subscription required ^7,500
Copper Equivalent t  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.


Reserves at December 31, 2021:
Ore Reserves are derived from value-based planning resulting in a minimum cut-off of 0.18 %TCu.
Mineral Resources are quoted above a 0.18 %TCu cut-off within an optimised pit shell.

CategoryTonnage CommodityGradeContained Metal
Proven 636.9 Mt Copper 0.7 % 4,458 kt
Proven 636.9 Mt Molybdenum 0.02 % 127 kt
Probable 1,030 Mt Copper 0.43 % 4,429 kt
Probable 1,030 Mt Molybdenum 0.016 % 161 kt
Proven & Probable 1,667 Mt Copper 0.53 % 8,888 kt
Proven & Probable 1,667 Mt Molybdenum 0.017 % 289 kt
Measured 41.6 Mt Copper 0.4 % 166 kt
Measured 41.6 Mt Molybdenum 0.016 % 7 kt
Indicated 638.7 Mt Copper 0.39 % 2,491 kt
Indicated 638.7 Mt Molybdenum 0.016 % 102 kt
Measured & Indicated 680.4 Mt Copper 0.39 % 2,658 kt
Measured & Indicated 680.4 Mt Molybdenum 0.016 % 109 kt
Inferred 39.3 Mt Copper 0.45 % 177 kt
Inferred 39.3 Mt Molybdenum 0.018 % 7 kt


Heavy Mobile Equipment:
HME TypeModelSizeQuantityStatusRef. Date
Drill (blasthole) ....................... Subscription required ....................... Subscription required Proposed Jan 27, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Jan 27, 2022
Shovel (rope) ....................... Subscription required ....................... Subscription required Existing Feb 24, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Jan 27, 2022
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Apr 14, 2022
Subscription required - Subscription is required.

Staff:

Total WorkforceYear
Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Year-end Mineral Reserves 2016
Corporate Presentation 2015
Other 2015
Year-end Mineral Reserves 2015
Other 2002
Subscription required - Subscription is required.

News:

NewsDate
Anglo American kicks off commissioning at Quellaveco copper project June 9, 2022

Subscription required - Subscription is required.

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