Mantos Blancos is an open-pit mine located in the Antofagasta region of Chile, within a one-hour drive of port facilities at Antofagasta and Mejillones, and the Glencore-owned Altonorte copper smelter. There is no on-site accommodation as all staff live off-site, mainly in the city of Antofagasta. The operation currently mines and processes both sulphide and oxide ores. Following the completion and ramp up of the Mantos Blancos Concentrator Debottlenecking Development Project (“MBCDP”, or “Mantos Blancos Expansion”), the mine primarily treats sulphide ore in an expanded concentrator.
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Notes
Owner: Capstone Copper
Start operations: 1961
Copper production: 65 ktpa
Products: copper concentrates; Ag co-product
Recipient of The Copper Mark
Köppen climate type: BWk
Media
- Jun-26:
- Capstone Copper Submits Environmental Permit for Mantos Blancos Phase II (checked 19-Jun-26)
- A Water Problem Sits Under Capstone’s Chile Copper Expansion (checked 23-Jun-26)
Created: 26-Jun-2025; updated Jun-26