Meridian Mining’s Cabaçal gold-copper project in Mato Grosso is emerging as a prominent example of London capital helping advance a Brazilian polymetallic development from feasibility studies toward construction readiness.
The project has attracted significant investor attention as Meridian strengthens its position in London while using equity funding to advance engineering, permitting, drilling and other pre-development work. The next challenge will be converting that market access into the substantially larger financing package required to build the mine.
London Listing Strengthens Cabaçal’s Funding Base
Meridian Mining joined the London Stock Exchange’s Main Market in May 2026, raising approximately £22.5 million through its first UK institutional placing. The transaction followed an earlier C$57.5 million financing, providing the company with additional funds to progress Cabaçal through increasingly advanced stages of development.
The London listing expands Meridian’s potential institutional investor base and gives the company access to one of the world’s largest mining-focused capital markets. The equity raised so far is intended primarily to fund development rather than construction. The project’s estimated capital requirement is considerably larger.
US$248 Million Development Plan
Cabaçal is located in Mato Grosso, within a historic mining district supported by existing regional infrastructure. Its pre-feasibility study outlined an initial development capital requirement of approximately US$248 million, alongside an after-tax net present value of approximately US$984 million and an estimated 61.2% internal rate of return.
The proposed mine is expected to produce an average of approximately 141,000 gold-equivalent ounces per year over a ten-year operating period. The combination of gold and copper gives Cabaçal a diversified revenue profile compared with a single-metal operation. At the same time, the polymetallic nature of the project introduces additional technical and commercial considerations, including concentrate quality, metallurgical recoveries and assumptions surrounding copper and gold pricing.
Definitive Feasibility Study Becomes the Next Milestone
Meridian is now progressing its definitive feasibility study, which is approximately halfway complete and is scheduled for delivery during the fourth quarter of 2026. The company has also submitted its installation-licence application, bringing environmental permitting and final engineering into greater focus.
These developments are important because Cabaçal is moving beyond the resource-definition stage. Investors and potential lenders will increasingly require evidence that the project’s technical design, permitting pathway and capital requirements are sufficiently mature to support a construction decision. The definitive feasibility study is therefore likely to become a major valuation catalyst.
Strong Project Economics Still Face Financing Tests
Cabaçal’s reported 61.2% IRR provides a substantial economic cushion and suggests that the project could potentially withstand some deterioration in metal prices or construction assumptions. Project lenders, however, are unlikely to rely solely on the headline feasibility metrics. A financing review would typically involve more conservative assumptions for gold and copper prices, metallurgical recoveries and construction costs. Lenders will also consider the potential impact of Brazilian inflation, exchange-rate movements and contingency requirements.
These adjustments could materially change the amount of debt the project can support. The final financing structure could therefore involve a combination of equity, senior project debt, equipment financing and potentially a precious-metals streaming transaction.
London Equity Does Not Fund the Mine Build
The capital raised through Meridian’s London-market activities provides an important development runway, but it does not cover the estimated US$248 million construction requirement. That distinction is critical. Equity financing can fund drilling, engineering, permitting and early project commitments while a company prepares the documentation required by banks and strategic investors. Construction, however, requires a much larger and more structured capital package.
Meridian will therefore need to demonstrate that the project can support sufficient debt capacity while preserving an attractive return for equity investors. A completed feasibility study, advanced permits and stronger engineering definition could make it easier to bring potential lenders and strategic financiers into the process.
Brazilian Infrastructure Provides a Potential Advantage
Cabaçal’s location within an established historical mining district could help reduce some of the infrastructure challenges faced by greenfield developments in remote regions. Existing regional infrastructure can potentially lower certain development costs and shorten construction schedules, although the definitive feasibility study will determine how much of that advantage can ultimately be reflected in the project’s capital and operating assumptions.
The project’s polymetallic production profile also provides potential flexibility in revenue generation, with gold and copper contributing to overall economics. At the same time, concentrate specifications and recovery performance will remain closely watched because they can directly affect realised revenues and processing terms.
From London Capital to Construction Finance
Cabaçal’s development illustrates the different stages of capital required to bring a mining project into production. Meridian has demonstrated that it can attract substantial equity investment and establish a presence on the London Main Market. It has also advanced technical studies and entered the permitting process. The next stage is considerably more demanding.
The company must complete the definitive feasibility study, advance environmental approvals and translate its strong pre-feasibility economics into a financing structure acceptable to commercial lenders and potential strategic investors. If those milestones are achieved, Cabaçal could become an important example of how London’s mining capital markets can help move a Brazilian gold-copper project toward construction. For now, the project’s key test is whether Meridian can turn successful equity-market access into a fully financeable development package capable of supporting the US$248 million mine build.
