Mantoverde Pyrite Augmentation Project Economics: $200M NPV, $45M Capex
Capstone Copper Corp.'s Mantoverde Pyrite Augmentation in Atacama Region, Chile has an economic study outlining an after-tax NPV of $200M and initial capital of $45M.
Capstone Copper Corp.'s Mantoverde Pyrite Augmentation has reported economic study results for the copper project in Atacama Region, Chile. The study headlines an after-tax net present value of $200M at a 8% discount rate. It reflects Capstone Copper Corp.'s (CS.TO) latest disclosed economics for the asset.
Economics. The after-tax NPV is $200M using a 8% discount rate. Initial capital expenditure is estimated at $45M. Economics are based on Base Case: Copper $5.00/lb, Sulphuric Acid $200/t; Spot Case: Copper $6.25/lb, Sulphuric Acid $475/t.
Production and mine plan. Average annual production is approximately 3.5 ktpa Cu.
These figures are extracted from Capstone Copper Corp.'s technical disclosures and reflect the most recent disclosure on file. Compare this project against other developers and producers in our project economics database, and always verify the numbers against the original technical report before making any investment decision.
Our Analysis
- NPV after-tax
- $200M
higher than 19% of 31 projects we track
- Initial capex
- $45M
22% of NPV
costlier than 6% of 35 projects we track
- Study price assumption
- Base Case: Copper $5.00/lb, Sulphuric Acid $200/t; Spot Case: Copper $6.25/lb, Sulphuric Acid $475/t
- Spot copper today
- $6.52/lb
The project sits in an unremarkable middle tier of our tracked universe: its after-tax NPV of $200M ranks higher than only 19% of the 31 copper projects we follow. That is not a headline number, but it is also not the point. The point is that this is a capital-light development in the Atacama Region of Chile, a jurisdiction that carries genuine mining pedigree and permitting maturity. Those two facts together, modest scale and a credible address, mean the returns here should be read as a function of execution discipline, not resource optionality.
The constraint that matters most is funding, and on that front the project is almost unusually comfortable. Initial capex of $45M is just 22% of NPV, a figure lower than 94% of the 35 copper projects we track, and the build cost is small relative to the company's US$7.39B market cap. A mid-cap with nine projects in our coverage can absorb this spend without breaking stride, which removes the dilution and financing overhang that typically discounts smaller developers. The NPV-to-market-cap gap is not a signal of hidden value here; it is simply a reflection that this asset is one line item in a diversified portfolio, not the controlling stake.
What should temper enthusiasm is the price deck. The base case assumes copper at $5.00/lb, well below the current spot of $6.52/lb, so the study is deliberately conservative, and the spot case at $6.25/lb still sits under today's market. That is a cushion, not a promise, and it leaves room for downside if prices normalize. The real question is whether a $200M NPV on a $45M build, in a stable jurisdiction, justifies the attention of investors who could deploy the same capital into a larger, higher-ranked copper asset. That is the trade, and it hinges on whether the company's other eight projects carry the portfolio, because this one alone does not move the needle.
Our take, benchmarked against the project economics in the Mining Stocks database. Figures are estimates drawn from company technical reports — not investment advice; always verify against the source filing.