La Colorada is an underground polymetallic silver mine located in Zacatecas, Mexico, and was acquired by Pan American in 1998.
- Location: Zacatecas, Mexico
- Mine Type: Underground
- Ownership: 100%
- Production: Silver and gold doré, silver rich lead and zinc concentrates
- Capacity: 1,800 tpd
- Deposit Type: Epithermal veins, breccia pipes, mantos, and replacements
Silver, gold, zinc, and lead mineralization is present as epithermal veins, breccia pipes, mantos, and lime stone replacements in three main zones known as Candelaria, Estrella, and Recompense. The mining method used at all three mines is cut and fill stoping.
An expansion of the La Colorada mine was approved in 2013 at an estimated capital cost of $137 million. Construction of the 618-metre deep mine shaft and a new 1,400 tonne per day sulphide processing plant was completed in late 2016. In 2017, we energized a new power line and opened new production areas in the underground mine. By mid-2017, we had achieved the targeted design capacity of 1,800 tonnes per day, comprised of 1,400 tonnes per day of sulphide ore and 400 tonnes per day of oxide ore. Silver production is expected to rise 62% to 69% in 2018 over 2013 levels, along with significant increases in zinc and lead production.
The La Colorada Technical Report, on which the foregoing is based, is a preliminary economic assessment. The results of this preliminary economic assessment are preliminary in nature, in that it includes inferred mineral resources that are considered too geologically speculative to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the assessment will be realized. Mineral resources that are not mineral reserves have no demonstrated economic viability.
For more information on La Colorada operations, please see our most recent Quarterly Report.