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Peru
Contonga Mine

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 Location:
9 km NE from San Marcos, Peru

  Regional Office:
Edificio República Pasaje Los Delfines 159, Urbanización Las Gardenias Distrito Santiago de Surco
Lima
Peru
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  • Overview
  • Owners
  • Geology
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StatusCare and Maintenance
Mine TypeUnderground
Commodities
  • Zinc
  • Lead
  • Copper
  • Silver
Mining Method
  • Cut & Fill
  • Shrinkage stoping
Production Start...
Mine Life5 years (as of Jan 1, 2021)
Contonga was placed on care and maintenance in 2019.
Agreement has been reached to sell Contonga to a third party, with closing expected in 2022.


Owners

Source: p. 25
CompanyInterestOwnership
Glencore plc. 97.6 % Indirect

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Skarn


Summary:

The Contonga mine is an underground polymetallic operation with more than 27 years of mining history. The mine site is located in the Central Peruvian Andes, 470 kilometres north-east of Lima, Peru. At the Contonga mine, vertically zoned mineralization of skarn replacement is controlled by bedding orientation. Faulting occurs predominantly in strongly folded limestone, which surrounds the well-defined Contonga stock.

The polymetallic province of central Peru forms a 120-km-wide-800-km-1ong belt which corresponds with the western Cordillera and the high plateaus of the Andes between 7 and 14". Polymetallic vein and Skarn deposits associated with Cenozoic magmatism are the principal metal producers (they account for 70, 87, and 96% of Zn, Pb, and Ag production respectively), but stratabound deposits have gained in importance during the past 20 years, mainly as Zn providers; currently they account for 30, 13, and 4% of Zn, Pb, and Ag production respectively. Two principal sedimentary metallotects have been identified.

The variety in ages and types of polymetallic deposits made this province an especially attractive target for a comprehensive study of the distribution of minor and trace elements such as Ag, Bi, Cd, In, Ge, Ga, Sn, etc. in polymetallic ores on a regional scale.


Mining Methods

  • Cut & Fill
  • Shrinkage stoping


Summary:


Crushing and Grinding
Source: Subscription required


Processing

Flow Sheet: Subscription required

- subscription is required.


Production:

CommodityProductUnits201920182017201620152014
Zinc Metal in concentrate M lbs  ......  Subscription required00242629
Lead Metal in concentrate M lbs  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Metal in concentrate M lbs  ......  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
Zinc Concentrate kt 242628
Lead Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate kt  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019201820172016201520142013
Ore tonnes mined 156 kt400 kt260 kt
Tonnes milled 450 kt434 kt392 kt346 kt
Daily milling rate 1.2 kt

Reserves at December 31, 2019:
The Mineral Resources as at 31th December 2021 at Contonga mine are unchanged from 31 December 2020.

CategoryTonnage CommodityGrade
Proven 0.3 Mt Zinc 3.3 %
Proven 0.3 Mt Lead 0.8 %
Proven 0.3 Mt Copper 0.8 %
Proven 0.3 Mt Silver 55 g/t
Probable 0.8 Mt Zinc 3.4 %
Probable 0.8 Mt Lead 1.2 %
Probable 0.8 Mt Copper 0.5 %
Probable 0.8 Mt Silver 63 g/t
Proven & Probable 1.2 Mt Zinc 3.4 %
Proven & Probable 1.2 Mt Lead 1.1 %
Proven & Probable 1.2 Mt Copper 0.6 %
Proven & Probable 1.2 Mt Silver 61 g/t
Measured 2.5 Mt Zinc 3.3 %
Measured 2.5 Mt Lead 0.5 %
Measured 2.5 Mt Copper 0.8 %
Measured 2.5 Mt Silver 50 g/t
Indicated 5 Mt Zinc 2.9 %
Indicated 5 Mt Lead 0.8 %
Indicated 5 Mt Copper 0.5 %
Indicated 5 Mt Silver 52 g/t
Measured & Indicated 7.5 Mt Zinc 3 %
Measured & Indicated 7.5 Mt Lead 0.7 %
Measured & Indicated 7.5 Mt Copper 0.8 %
Measured & Indicated 7.5 Mt Silver 55 g/t
Inferred 4.4 Mt Zinc 2 %
Inferred 4.4 Mt Lead 1 %
Inferred 4.4 Mt Copper 1 %
Inferred 4.4 Mt Silver 49 g/t

Operating Costs:

Units2015
Direct operating costs ($/t milled) USD 73



Heavy Mobile Equipment as of December 31, 2018:
HME TypeSizeQuantity
ANFO Loader ....................... Subscription required
Drill ....................... Subscription required
Jumbo ....................... Subscription required
Load-Haul-Dump (LHD) 4 cu. yd ....................... Subscription required
Load-Haul-Dump (LHD) 6 cu. yd ....................... Subscription required
Scissor Lift ....................... Subscription required
Truck (dump) 15 cu. m ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

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


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
Annual Report 2018
Technical Report 2018
Year-end Mineral Reserves 2018
Annual Report 2017
Year-end Mineral Reserves 2017
Annual Report 2016
Press Release 2016
Fact Sheet 2015
Press Release 2015
Year-end Mineral Reserves 2015
Annual Report 2014
Other 1990
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