Mantoverde optimised project, Chile
Name of the Project
Mantoverde optimised (MV-O) project.
Location
Region of Atacama, in Chile.
Project Owner/s
The project is 70%-owned by Capstone Copper and 30% by Mitsubishi Materials Corporation.
Project Description
The capital-efficient brownfield expansion of Mantoverde’s sulphide concentrator will increase throughput from 32 000 t/d to 45 000 t/d of ore, providing incremental copper and gold production of about 20 000 t/y and 6 000 oz/y respectively, and extending the mine life from 19 to 25 years.
Potential Job Creation
Not stated.
Net Present Value/Internal Rate of Return
Not disclosed.
Capital Expenditure
$176-million.
Planned Start/End Date
Capstone estimates that the MV-O sulphide concentrator expansion construction will require about one year, followed by a ramp-up period in the fourth quarter of 2026.
The expanded sulphide throughput capacity of about 45 000 t/d of ore is expected to be sustained, starting in early 2027.
The company expects the construction and ramp-up of the oxide leach optimisation to require an additional quarter, with higher cathode production starting in the second quarter of 2027.
Latest Developments
MV-O was formally sanctioned for development following receipt of the DIA, or Declaración de Impacto Ambiental, environmental permit in early July 2025.
Key Contracts, Suppliers and Consultants
Not disclosed.
Contact Details for Project Information
Capstone Copper, tel +1 604 684 8894 or email info@capstonecopper.com.
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