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Operations | Kolpa
Producing mine located in the prolific mining region of Peru, boasting a history of consistent production with significant potential for resource expansion.
Quick FactsLocation - Huachocolpa District, Huancavelica, Peru
- 490 km SE of Lima, Peru
- Avg elevation: 4,400 metres above sea level
Land Package - 145 mining rights covering 25,786 hectares
Infrastructure - Power supplied by high voltage transmission lines with backup generator systems
- Water treatment plants are located on site
- On site camps with capacity to house ~1,700 workers year-round
Geology Silver polymetallic mineralization rich in zinc, lead and copper, in production for 20+ years
Concentrates Produced Lead-silver concentrate, zinc-silver concentrate, copper-silver concentrate
Deposits - Primary Deposits: Bienaventurada (underground) and Yen (open pit)
- Other Deposits: Chonta, Escopeta, Escondida, Teresita, Rublo
Mining Method Sub-level stoping and cut-and-fill
Processing Method Conventional flotation
Minera Kolpa
Kolpa, our third producing mine and first in Peru, was acquired by Endeavour Silver in 2025 and is located in the Huachocolpa region of Huancavelica, about 490 kilometers southeast of Lima. Peru, a key mining jurisdiction, ranks as the world’s third largest silver producer.
Kolpa has come a long way since its early days as an 800-tonne-per-day operation, steadily increasing its throughput to over 1,800 tonnes per day, with plans underway to expand to 2,500 tonnes. A key strength of Kolpa lies in its strong alignment with Endeavour’s technical expertise; our underground mining capabilities, paired with a team that brings deep, long-standing experience at this site, position us well for continued operational success.
In 2024, Kolpa processed approximately 685,000 tonnes, yielding 2.0 million ounces of silver, along with 19,820 tonnes lead, 12,554 tonnes zinc and 518 tonnes copper. In silver-equivalent terms, this amounted to a total production of 5.1 million ounces (Moz).
2026 Outlook
At Kolpa, plant throughput in 2026 is forecast to range from 2,300 to 2,500 tonnes per day (tpd), averaging 2,400 tpd, with material sourced mainly from the Bienaventurada and Poderosa concessions, while a plant expansion will be supplemented by lower-grade ore from the Yen open pit. Cash costs per ounce1, AISC per ounce1, and direct costs1 per tonne are expected to improve compared to 2025, supported by higher metal production driven by increased processing volumes and stronger base metal prices which provide a by-product credit.
The Kolpa acquisition closed on May 1, 2025, therefore eight months of results are included in the 2025 data below.
Operating Data
2025 Silver produced (oz) 1,611,194 Lead produced (K t) 8,148 Zinc produced (K t) 9,016 Copper produced (T) 284 Silver equivalent (oz) 3,357,774 Ore processed (t) 513,478 Silver grade (g/t) 108 Lead/zinc/copper grade (%) 3.08/2.07/0.21 Cash operating costs 1 - All-in sustaining costs 1 - 1 These are examples of Non-IFRS Financial Measures. Please refer to the Non-IFRS Measures section of the Company’s Management’s Discussion & Analysis for further information and definitions of these terms.
Historical Production
Operating Year
2024 2023 2022 2021 2020 2019 2018 2017 2016 Tonnes
Processed686,503 661,535 631,455 593,545 455,564 400,117 326,005 283,445 283,714 Head Grade
Ag (opt)3.3 3.06 2.66 2.04 2.26 3.4 3.99 3.8 3.39 Head Grade
Pb (%)3.08 2.9 2.85 2.44 2.92 3.6 3.07 3.34 4.21 Head Grade
Zn (%)2.13 2.12 2.02 2.44 2.87 2.48 3.04 3.74 3.91 Head Grade
Cu (%)0.18 0.18 0.18 0.22 0.27 0.27 0.26 0.33 0.45 Recovery
Ag (%)89.88 89.14 85.35 86.58 89.21 90.67 82.92 81.4 81.36 Recovery
Pb (%)93.79 92.82 89.98 89.6 91.5 94.53 90.13 86.15 85.95 Recovery
Zn (%)85.82 83.91 82.15 82.99 84.84 81.4 81.96 80.96 84.85 Recovery
Cu (%)42.54 44.33 33.01 47.04 56.23 63.32 67.98 52.73 54.05 Produced
Ag (oz)2,037,053 1,805,663 1,431,962 1,049,111 863,159 1,237,452 1,070,030 853,849 783,664 Produced
Pb (tonnes)19,820 17,825 16,202 12,971 12,158 13,623 8,998 8,065 10,255 Produced
Zn (tonnes)12,554 11,746 10,488 12,028 11,011 7,943 8,052 8,394 9,415 Produced
Cu (tonnes)518 522 379 608 690 95 602 492 688 Produced
AgEq (oz)5,066,852 4,599,018 3,916,593 3,532,924 3,206,687 3,153,182 2,827,071 2,536,298 2,812,087 Note: AgEq Calculated using constant pricing for comparison purposes (Pb tonnes x $1,984 + Zn tonnes x $2,755 + Cu tonnes x $9,369/$26) + Ag oz
This data has been compiled from third-party sources and has not been independently verified.Geology & Mineralization
The Huachocolpa mining district is located on the eastern flank of the Western Cordillera of the Andes at an average elevation of 4,400 masl. Kolpa is situated within the Central Cordillera of Peru along the central part in the recognized Miocene Polymetallic Mineral Belt, including deposits such as Yauricocha, Corihuarmi, Marta, Pucajaja, Palkwanka, Caudalosa Grande and El Milagro.
Kolpa is a Polymetallic Epithermal Low Sulfidation deposit, vetiform style with hydrothermal solutions filling fractures. Mineralization is hosted in a volcanic rock, tuff-breccias, latites and lava flows of the Huachocolpa Group. The deposit comprises multiple veins comprised of pyrite, sphalerite, galena, argentiferous galena, chalcopyrite and gray coppers.
Local structural context includes sub-vertical structures resulting from compressive stresses relating to the Andean Orogeny. Structural controls on mineralization result in well-developed arrays of ENE to NE trending vein-sets. The structural pattern can repeat and extend over other nearby sets of differently oriented structures, resulting in adjoining sequences overlapping to produce a form of 'structural pairing'.
Technical Reports
Technical Report on the Huachocolpa Uno Mine Property, Huancavelica Province, PeruPhoto Gallery
