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Peru
Antapaccay Mine

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 Location:
16 km S from Espinar, Peru

  Regional Office:
Republic Building Los Delfines Passage 159, Urbanization Las Gardenias District Santiago de Surco
Lima
Peru
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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
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life12 years (as of Jan 1, 2021)
Latest NewsGlencore's Antapaccay copper mine in Peru suspends operations over community blockade     March 11, 2021


Owners

Source: p. 17,31
CompanyInterestOwnership
Glencore plc. 100 % Indirect
Compañía Minera Antapaccay S.A. (operator) 100 % Direct
The Antapaccay project is owned and operated by Compañía Minera Antapaccay S.A. (CM Antapaccay), a Peruvian company that is an indirect wholly-owned subsidiary of Glencore.

Deposit Type

  • Porphyry
  • Skarn


Summary:

The Antapaccay project contains a porphyry-skarn type (copper-silver-gold) deposit located in the Eocene-Oligocene Andahuaylas-Yauri strip, 9.4 kilometres southwest in a straight line from the Tintaya mine, in the area of the old Atalaya mine. The Eocene-Oligocene Andahuaylas-Yauri strip is located 250 to 300 kilometres west of the current Peru-Chile Trench, above a thick cap of sialic crust (50 to 60 kilometres), in a transitory zone between the flat subduction slab of central Peru and the normal subduction of southern Peru and northern Chile and immediately to the southeast of the Abancay deflection. It consists geologically of a thick cretaceous sedimentary sequence folded during the Andean deformations and widely intruded by stocks, sills and dykes of Andahuaylas-Yauri batholith, covered by Cenozoic lacustrine and volcanic deposits and quaternary deposits.

The copper mineralization at Antapaccay is mainly contained in intermediate intrusive rocks with dissemination, veinlets, hydrothermal breccias which are in contact with pre-mineral rocks such as diorites and sedimentary rocks (limestones, calcareous shales, siltstones and sandstones), forming contact mineralized breccias, exoskarn and stockwork in sedimentary bodies with a clear predominance of chalcopyrite over bornite up to 350 metres; the roles reverse at a greater depth and are associated with a level of anhydrite-gypsum.

The dominant mineralization within the porphyry is chalcopyrite, followed by bornite and chalcocite. Mineralization consists of both disseminations and veinlets, with the highest grades of gold corresponding to intense bornite rich stockwork zones. The dominant alteration type within the porphyry is a potassic alteration of the host diorite. The porphyry is also in contact with cretaceous sedimentary rocks, which have formed irregular skarn (limestones) and stockwork (hornfels and quartzites) containing high copper values, but represent a minor component of all the resources.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Antapaccay mine is an open pit mine (consisting of a North pit and a South pit) with truck and shovel operations that provide a total annual material handling capacity of approximately 165 million tonnes of material. Major equipment includes a fleet of owner-operated 400 short ton class trucks, 48 cubic metre and 35 cubic metre rope shovels, dozers and loaders, as well as support equipment. Ore is mined and sent to the primary crusher located at the mine and the crushed ore is subsequently transported to the coarse ore stockpile by an overland conveyor of approximately 6.8 kilometres. The feeders at the coarse ore stockpile convey the crushed ore to the Antapaccay plant for processing. A portion of the material from the coarse ore stockpile is transported to the Tintaya plant for processing.


Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
SAG mill 1
Ball mill 2


Processing

  • Flotation

Source: Subscription required

Summary:

The Antapaccay metallurgical plant consists of a semi-autogenous grinding mill and two ball mills to prepare feed for a conventional flotation circuit to recover the copper, gold and silver contained in the feed ore into a copper concentrate. The Tintaya metallurgical plant consists of multi-stage crushing followed by ball-milling to prepare feed for a conventional flotation circuit to recover the copper, gold and silver contained in the feed ore into a copper concentrate. The nominal throughput of the Antapaccay and Tintaya plants are currently approximately 85,000 and 20,000 tonnes per day, respectively. The copper concentrate produced from both processing plants is thickened and filtered on site prior to being trucked approximately 355 kilometres to port facilities at the Port of Matarani, operated by TISUR, for shipment to smelters. The road from Tintaya to the port has been expanded to accommodate the shipment of concentrates originating from the Antapaccay project.

Fl ........

Recoveries & Grades:

CommodityParameter20152014
Copper Head Grade, % 0.730.72
Gold Head Grade, g/t 0.170.14
Silver Head Grade, g/t 1.561.47

Production:

CommodityUnits2021202020192018201720162015
Copper kt  ......  Subscription required  ......  Subscription required  ......  Subscription required205206220202
Gold koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate.
Subscription required - Subscription is required.

Operational Metrics:

Metrics20212020
Daily processing capacity  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required
Tonnes milled  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2021:
Mineral Resources and Ore Reserves were estimated using a variable cut-off grade with a marginal cut-off grade of 0.10% Cu content considered as the minimum recoverable grade.

CategoryTonnage CommodityGrade
Proven & Probable 475 Mt Copper 0.42 %
Proven & Probable 475 Mt Gold 0.08 g/t
Proven & Probable 475 Mt Silver 1.15 g/t
Measured & Indicated 632 Mt Copper 0.39 %
Measured & Indicated 632 Mt Gold 0.08 g/t
Measured & Indicated 632 Mt Silver 1.1 g/t
Inferred 177 Mt Copper 0.28 %
Inferred 177 Mt Gold 0.05 g/t
Inferred 177 Mt Silver 0.66 g/t


Heavy Mobile Equipment:
HME TypeModelSizeQuantityRef. Date
Shovel (rope) 48 cu. m Dec 31, 2021
Shovel (rope) 35 cu. m Dec 31, 2021
Truck (haul) ....................... Subscription required 220 t ....................... Subscription required Feb 16, 2017
Truck (haul) ....................... Subscription required 360 t ....................... Subscription required Feb 16, 2017
Truck (haul) ....................... Subscription required 320 t ....................... Subscription required Feb 16, 2017
Truck (haul) ....................... Subscription required 220 t ....................... Subscription required Feb 16, 2017
Truck (haul) ....................... Subscription required 220 t ....................... Subscription required Feb 16, 2017
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 5, 2022
....................... Subscription required ....................... Subscription required Subscription required May 5, 2022
....................... Subscription required ....................... Subscription required Subscription required May 5, 2022
....................... Subscription required ....................... Subscription required Subscription required May 20, 2022
....................... Subscription required ....................... Subscription required Subscription required May 5, 2022
....................... Subscription required ....................... Subscription required Subscription required May 5, 2022
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Other 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Corporate Presentation 2016
Other 2016
Year-end Mineral Reserves 2016
Annual Report 2014
Annual Report 2013
Subscription required - Subscription is required.

News:

NewsDate
Glencore's Antapaccay copper mine in Peru suspends operations over community blockade March 11, 2021

Aerial view:

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