Peru

La Zanja Mine

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Categories

Overview

Mine TypeOpen Pit
StageResidual leach
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start... Lock
ShapshotLa Zanja consists of two-ore deposits in production in oxide material: San Pedro Sur and Pampa Verde.

Mining activities at the Pampa Verde pit will be paused during 2023 to focus on sulfide deposit exploration beneath the pit. However, leaching will continue at La Zanja’s San Pedro pad to the extent that this remains profitable.

Buenaventura has opted not to continue with Phase 5 exploitation for the time being despite Pampa Verde pit Phase 4 stripping completion. Phase 5 mining has been postponed due to OpEx inflationary pressure.

Owners

SourceSource
CompanyInterestOwnership
Compania de Minas Buenaventura S.A.A. 100 % Indirect
Minera La Zanja S.R.L (operator) 100 % Direct
On February 08 of 2022, the acquisition by Buenaventura of 100% of the shares of Minera La Zanja as part of the agreement between Buenaventura and Newmont for Minera Yanacocha, was announced.

Minera La Zanja S.R.L. operates La Zanja mining unit. Minera La Zanja S.R.L. is 100 % owned by Buenaventura as of December 31, 2022.

Deposit type

  • Vein / narrow vein
  • Epithermal
  • Porphyry

Summary:

La Zanja is located within a large area of hydrothermal alteration, mainly related to epithermal gold deposits in high sulphidation environments, in addition to some bonanza Au vein epithermal systems, Cu-Au transitional epithermal-porphyry, and breccias pipe Cu-Au-Mo. There are two-ore deposits in production in oxide material: San Pedro Sur and Pampa Verde. Epithermal gold mineralization in oxides associated with dome edges in San Pedro and Pampa Verde deposits. Additionally, several low and intermediate-sulfidation vein systems have been recognized on the periphery, as well as copper/molybdenum/gold mineralization related to porphyry-type systems.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

Milling equipment has not been reported.

Processing

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Production

CommodityUnits2022202120202019201820172016
Gold oz 0000000000000000000071,630127,118139,724
Silver oz 0000000000000000000000217,174280,908217,292
All production numbers are expressed as metal in doré.

Operational metrics

Metrics202220212020201920182017
Daily mining rate 00000000
Daily processing capacity 0000000000
Tonnes processed 00000000000000000000000000005,702,881 t10,694,942 t

Production Costs

CommodityUnits202220212020201920182017
Cash costs (sold) Silver USD 000 00 000 14.2 / oz   11.2 / oz   10.7 / oz  
Cash costs (sold) Gold USD 0000 0000 0000 1,233 / oz   891 / oz   789 / oz  

Financials

Units202220212020201920182017
Capital expenditures M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 13.2   17.3  
Revenue M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe 96.6   165.3  
Operating Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -11.8   -18.4  
Gross profit M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -7.5   12.1  
Pre-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -12.3   -19.6  
After-tax Income M USD  ....  Subscribe  ....  Subscribe  ....  Subscribe  ....  Subscribe -13.5   -12.8  
Book Value M USD  ....  Subscribe

Heavy Mobile Equipment

Fleet data has not been reported.

Personnel

Mine Management

Source Source
Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 25, 2023
....................... Subscription required ....................... Subscription required Subscription required Jun 25, 2023
....................... Subscription required ....................... Subscription required Subscription required Jun 25, 2023

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020
Subscription required Subscription required Subscription required 2019
Subscription required Subscription required Subscription required 2018
Subscription required 2017
Subscription required 2016

Aerial view:

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