Overview
Stage | Production |
Mine Type | Underground |
Commodities |
|
Mining Method |
|
Production Start | ...  |
Mine Life | 2 years (as of Jan 1, 2022) |
After 11 days of production stoppage, Buenaventura announced the restart of production at the Julcani mine as of December 27, 2022. Operations normalized after the cease of blockades near the entry of the affected mining units.
The Julcani operations were suspended in February 2023 due to anti-government protests. However, operations were fully reestablished on February 16, 2023.
Acchilla is the main mining area. |
Source:
p. 41
The Julcani mine is wholly-owned and operated by Compania de Minas Buenaventura S.A.A.
Contractors
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Deposit Type
- Epithermal
- Breccia pipe / Stockwork
- Vein / narrow vein
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.
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.
Source:
Source:
Summary:

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Production:
Commodity | Product | Units | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Silver
|
Metal in concentrate
|
koz
| ...... ^ | ......  | ......  | ......  | ......  | 2,483 | 2,250 |
Gold
|
Metal in concentrate
|
oz
| | ......  | ......  | ......  | ......  | ......  | ......  |
Lead
|
Metal in concentrate
|
t
| | ......  | ......  | ......  | ......  | ......  | ......  |
Copper
|
Metal in concentrate
|
t
| | ......  | ......  | ......  | ......  | ......  | ......  |
Lead-Silver
|
Concentrate
|
kt
| | ......  | | | | | |
^ Guidance / Forecast.
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Operational Metrics:
Metrics | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
Daily milling capacity
| ......  | ......  | 585 t | 550 t | 550 t | |
Tonnes milled
| ......  | ......  | 71,943 t | 123,818 t | 109,025 t | 130,854 t |
Ore tonnes mined
| ......  | ......  | 71,943 t | 123,818 t | 109,025 t | 130,854 t |
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Reserves at December 31, 2022:
Category | Tonnage | Commodity | Grade | Contained Metal |
Proven & Probable
|
303 kt
|
Gold
|
0.008 oz/t
|
2 koz
|
Proven & Probable
|
303 kt
|
Silver
|
19.96 oz/t
|
6,045 koz
|
Proven & Probable
|
303 kt
|
Lead
|
1.66 %
|
5 kt
|
Proven & Probable
|
303 kt
|
Copper
|
0.52 %
|
2 kt
|
Measured & Indicated
|
139 kt
|
Gold
|
0.01 oz/t
|
1 koz
|
Measured & Indicated
|
139 kt
|
Silver
|
21.01 oz/t
|
2,925 koz
|
Measured & Indicated
|
139 kt
|
Lead
|
0.63 %
|
1 kt
|
Measured & Indicated
|
139 kt
|
Copper
|
0.47 %
|
1 kt
|
Source:

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Corporate Filings & Presentations:
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