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Peru
Julcani Mine

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 Location:
264 km SE from Lima, Peru

  Address:
Las Begonias 415, 19th Floor, San Isidro
Lima
Peru
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeUnderground
Commodities
  • Gold
  • Silver
  • Lead
  • Copper
Mining Method
  • Overhand Cut & Fill
Production Start...
Latest NewsBuenaventura Welcomes Resumption of Julcani and Orcopampa Operations in Peru     December 27, 2022


Owners

Source: p. 38
CompanyInterestOwnership
Compania de Minas Buenaventura S.A.A. (operator) 100 % Indirect
Julcani mine is wholly-owned and operated by Compania de Minas Buenaventura S.A.A.

Contractors

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Deposit Type

  • Epithermal


Summary:

Julcani is a large polymetallic deposit in Central Peru, which principally produces silver that presents mainly as sulpho-salts in many mineralogically complex veins. They are hosted in dacite domes, tuffs, breccias and other tertiary volcanic rocks. Julcani is a fracture-filling silver-bearing epithermal deposit with Ag-Pb-Bi-Cu-WO3 mineralization, hosted in a complex of dacitic/rhyolitic domes from the Tertiary. The most important system of structures runs NW-SE, followed by E-W and NE-SW. It is important to note the zoning, wherein the central part (Tentadora dome) exhibits an Au-Bi-WO3 ensemble that changes to Ag- Pb toward the edges. Historically, the most important mines have been Herminia, Nueva Herminia, Mimosa, and Manto. The Acchilla and Estela Mines are currently in operation. The minerals present include tetrahedrite, argentite, silver sulfosalts, galena, sphalerite, and chalcopyrite, with gangues of siderite, pyrite, barite, silica, and calcite.


Mining Methods

  • Overhand Cut & Fill


Summary:

Over the course of its history, it has had several areas of exploitation. Operations are currently underway at Acchilla and Estela, where there are eight levels, with the highest being 420 and the lowest being 710. The shafts are located in Acchilla. Exploitation is carried out using the conventional overhand cut and fill method. The waste is recirculated to the pits, and the excess material is transported to the barren material deposits on the surface. Mine water drainage is performed using pumping stations located near shafts 487 and 993, with maximum flow volumes of 120 l/s. There is an acid water treatment plant at Acchilla, with a capacity of 180 l/s. The mining method used in this operation is cut and fill, for which the primary equipment employed are pneumatic shovels, and locomotives. The mine is currently deepening the mine at level 710 operating with synergistic equipment such as electric shovels, jumbo jets and battery powered locomotives.


Crushing and Grinding
Source: Subscription required


Processing

Source: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Silver koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required  ......  Subscription required2,4832,2503,264
Gold oz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Lead t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in concentrate. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202120202019201820172016
Tonnes milled  ......  Subscription required  ......  Subscription required123,818 t109,025 t130,854 t173,865 t
Daily milling capacity  ......  Subscription required  ......  Subscription required550 t550 t550 t
Ore tonnes mined  ......  Subscription required  ......  Subscription required123,818 t109,025 t130,854 t173,865 t
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 293 kt Gold 0.004 oz/t 1 koz
Proven & Probable 293 kt Silver 19.46 oz/t 5,709 koz
Proven & Probable 293 kt Lead 1.5 % 4 kt
Proven & Probable 293 kt Copper 0.42 % 1 kt
Indicated 178,758 t Silver 613.01 g/t 3,523,096 oz
Indicated 178,758 t Lead 0.86 % 1,534 t
Inferred 233,796 t Gold 0.08 g/t 592 oz
Inferred 233,796 t Silver 605.83 g/t 4,553,821 oz
Inferred 233,796 t Lead 1.06 % 2,485 t

Commodity Production Costs:

CommodityUnits202120202019201820172016
Cash costs (sold) Lead USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,191 / t   2,543 / t   1,241 / t  
Cash costs (sold) Copper USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 7,392 / t   6,318 / t   2,837 / t  
Cash costs (sold) Silver USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 15 / oz   17.1 / oz   11.6 / oz  
Cash costs (sold) Gold USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 2,507 / oz   825 / oz  
Subscription required - Subscription is required.

Financials:

Units202120202019201820172016
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 3   2   0.8  
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 34.1  
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -7.7  
Gross profit M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -4.7   -9.9   12.8  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -7.8   -15.4   6.7  
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required -7.8  
Subscription required - Subscription is required



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Jul 25, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Aug 5, 2022
Subscription required - Subscription is required.

Staff:

EmployeesContractorsTotal WorkforceYear
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

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
Annual Report 2018
Form 20-F 2018
Press Release 2018
Press Release 2018
Quarterly Report 2018
Form 20-F 2017
Annual Report 2016
Form 20-F 2016
Press Release 2016
Subscription required - Subscription is required.

News:

NewsDate
Buenaventura Welcomes Resumption of Julcani and Orcopampa Operations in Peru December 27, 2022

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