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Peru
Antapaccay Mine

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 Location:
16 km SE from Espinar, Peru

  Regional Office:
Calle Oswaldo Baca I - 14 Urb. Magisterio, 1ra.
Etapa
Peru
Phone  ...  Subscription required
Fax+51-(84)-240967
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
  • Gold
  • Silver
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life11 years (as of Jan 1, 2019)


Owners & OPERATOR

Source: p. 228
CompanyInterestOwnership
Glencore plc. 100 % Indirect
Compañía Minera Antapaccay S.A. (operator) 100 % Direct
Glencore owns 100% of Compañía Minera Antapaccay S.A., which owns and operates the Antapaccay mine.

Deposit Type

  • Porphyry
  • Skarn


Summary:

The Antapaccay mine is located 9.4 kilometres southwest of CMA's (Compañía Minera Antapaccay S.A.) past-producing Tintaya mine, and the Antapaccay concentrator is located 4.5 kilometres south of the Tintaya concentrator.

The CMA property also includes the Coroccohuayco project, a satellite deposit that is located within 10 kilometres of the Antapaccay plant. At this stage, exploration and drilling at Coroccohuayco has focussed on defining Mineral Resources and no mining activities are being undertaken.

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 mineralisation 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 mineralised 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 main copper bearing minerals at Coroccohuayco are bornite, chalcopyrite and chalcocite, with the host rock consisting of Cretaceous sedimentary rocks of the Ferrobamba and Mara formation intruded by monzonitic plutons of the Eocene-Oligocene Andahuaylas-Yauri batholiths. The Coroccohuayco deposit is dominantly a skarn-hosted deposit, whereas the Antapaccay deposit is dominantly porphyry-hosted.


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 140 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 using mining trucks.

The current life of mine plan contemplates that the Antapaccay mine will operate until 2029, plus one additional year of stockpile processing. The Antapaccay plant will operate until 2030 and the Tintaya plant will operate until 2029. There is the potential to extend the mine life beyond 2029 through additional exploration on the CMA property.


Crushing and Grinding


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 ballmilling 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 80,000 and 20,000 tonnes per day, respectively. Installation of additional flotation capacity, expected to be completed by mid-2016, will increase throughput at the Antapaccay plant to approximately 85,000 tonnes per day.

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 ........

Recoveries & Grades:

CommodityParameter201520142013
Copper Head Grade, % 0.730.720.74
Gold Head Grade, g/t 0.170.140.17
Silver Head Grade, g/t 1.561.471.74

Production:

CommodityProductUnits201920182017201620152014
Copper Metal in concentrate kt  ......  Subscription required  ......  Subscription required206220202167
Gold Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Metal in concentrate koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal kt
Subscription required - Subscription is required.

Operational Metrics:

Metrics2016201520142013
Daily milling capacity 100 kt
Ore tonnes mined 32,187 kt28,983 kt21,856 kt
Waste 101,120 kt92,971 kt78,825 kt
Tonnes milled 32,524 kt27,175 kt23,510 kt

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven 210 Mt Copper 0.49 %
Proven 210 Mt Gold 0.09 g/t
Proven 210 Mt Silver 1.29 g/t
Probable 267 Mt Copper 0.41 %
Probable 267 Mt Gold 0.08 g/t
Probable 267 Mt Silver 1.14 g/t
Proven & Probable 477 Mt Copper 0.45 %
Proven & Probable 477 Mt Gold 0.08 g/t
Proven & Probable 477 Mt Silver 1.21 g/t
Measured 218 Mt Copper 0.49 %
Measured 218 Mt Gold 0.1 g/t
Measured 218 Mt Silver 1.3 g/t
Indicated 432 Mt Copper 0.39 %
Indicated 432 Mt Gold 0.08 g/t
Indicated 432 Mt Silver 1.1 g/t
Measured & Indicated 650 Mt Copper 0.42 %
Measured & Indicated 650 Mt Gold 0.09 g/t
Measured & Indicated 650 Mt Silver 1.17 g/t
Inferred 119 Mt Copper 0.3 %
Inferred 119 Mt Gold 0.05 g/t
Inferred 119 Mt Silver 0.67 g/t


Heavy Mobile Equipment as of February 16, 2017:
HME TypeModelSizeQuantity
Truck (haul) ....................... Subscription required 220 t 11
Truck (haul) ....................... Subscription required 360 t 12
Truck (haul) ....................... Subscription required 320 t 9
Truck (haul) ....................... Subscription required 220 t 8
Truck (haul) ....................... Subscription required 220 t 2
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Aug 12, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
....................... Subscription required ....................... Subscription required Subscription required Mar 15, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2018
................................... Subscription required 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
Subscription required - Subscription is required.

Aerial view:

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