Chalice Mining Advances Gonneville Toward Production Amid Global Palladium Realignment

The global transition toward decentralised and decarbonised industrial supply chains has placed a premium on secure, Western-headquartered critical mineral reserves. Chalice Mining Limited (ASX: CHN), an Australian exploration and development company, holds a prominent position within this thematic through its 100%-owned Gonneville Palladium-Nickel-Copper Project in Western Australia. Discovered in 2020 as a greenfield find , Gonneville represents a rare, large-scale undeveloped palladium-nickel-copper asset located within a tier-1 mining jurisdiction.

As industrial consumers look to insulate themselves from geopolitical supply bottlenecks, project advancements like Gonneville serve as indicators for the broader health and timeline of the Western world’s critical mineral independence. With its Pre-Feasibility Study (PFS) finalised in late 2025 and formal Feasibility Study (FS) workstreams actively moving forward , Chalice’s operational updates provide a detailed look at the financial, technical, and regulatory realities of bringing a major new multi-commodity mine into production by the end of the decade.

Gonneville resource scale with long-life production profile 

The foundational value of Chalice Mining is tied directly to the scale and geological characteristics of the Gonneville deposit, situated approximately 70km from Perth on predominantly cleared farmland owned by the company. According to the remodelled Mineral Resource Estimate from April 2024, the deposit contains an aggregate resource of 17 million ounces of palladium-platinum-gold (3E), 960,000 tonnes of nickel, 540,000 tonnes of copper, and 96,000 tonnes of cobalt.

To translate this resource into immediate economic viability, Chalice has established a robust Proved and Probable Ore Reserve totaling 260 million tonnes. Within this reserve, the Proved category stands at 2.5 million tonnes grading 1.40 grams per tonne 3E, 0.22% nickel, 0.18% copper, and 0.018% cobalt. The larger Probable reserve comprises 260 million tonnes grading 0.85 grams per tonne 3E, 0.16% nickel, 0.098% copper, and 0.017% cobalt. These reserves are strictly evaluated using conservative, bottom-of-the-cycle economic planning metrics, specifically modeling a palladium price of US$1,050 per ounce, platinum at US$1,000 per ounce, gold at US$2,200 per ounce, nickel at US$16,500 per tonne, and copper at US$9,000 per tonne.

The initial 23-year open-pit mine plan, as established by the December 2025 PFS, targets an output averaging 220,000 ounces per annum of 3E precious metals, alongside 7,000 tonnes per annum of nickel, 8,000 tonnes per annum of copper, and 700 tonnes per annum of cobalt. Crucially, this open-pit design exploits roughly 50% of the total resource. The unmined remainder below the planned pit boundaries leaves substantial down-dip opportunities for eventual underground extraction or expanded open-pit mining, presenting long-term structural options as macroeconomic cycles shift.

Metallurgical validation through pilot-scale execution 

A primary focal area during the first half of 2026 has been moving the metallurgical flowsheet from theoretical parameters to bankable execution realities. Chalice has designed a relatively conventional process route that produces two separate saleable concentrates - a copper concentrate rich in precious metals and a nickel-cobalt concentrate - alongside a precious metal doré bar. Under the modeled parameters, the copper concentrate is expected to feature roughly 20% copper and 45 to 60 grams per tonne of 3E precious metals. The nickel concentrate targets an 8% nickel grade and 0.8% cobalt, alongside 18 to 20 grams per tonne of 3E.

A geo-metallurgical variability study completed in early 2026 mapped out 11 distinct metallurgical domains within the deposit. The data confirmed that prior tests safely reflect the first 10 years of expected plant feed, establishing baseline certainties for the project's recovery models and projected revenue streams.

To de-risk the processing facility prior to a Final Investment Decision, Chalice commenced a targeted 11-hole metallurgical diamond-drilling campaign in April 2026. The recovered core will supply a continuous, 8-week pilot plant run scheduled for the second half of 2026. This pilot campaign serves as the final technical confirmation required by potential project financiers, testing full mass balances across the primary ore variations.

Strengthening execution through senior advisory integration 

As junior exploration companies transition toward multi-billion-dollar build phases, internal skill sets must scale accordingly. Chalice addressed this operational requirement in April 2026 by appointing the Odin Partnership Limited as strategic advisors. Odin’s principals include industry figures Mark Cutifani (former CEO of Anglo American and Executive Chair of Vale Base Metals) and Tony O'Neill (former Group Executive Director of Technical and Sustainability at Anglo American). Their immediate brief involves an independent technical optimisation and value review of the Gonneville PFS, with final results expected to alter or accelerate specific engineering paths later in the year.

On the financial strategy front, Chalice brought in Cutfield Freeman & Co as specialist debt advisors. Backed by an operational management team that includes Exploration Manager David Freeman and GM of Corporate Development Ben Goldbloom, the company's financial structure remained stable through the first quarter of the year. As of March 31, 2026, Chalice reported a cash position of A$55.9 million alongside A$7 million held in liquid, listed corporate investments. Management maintains that this total capital buffer of A$62.9 million leaves the organisation funded through its target first-half 2028 Final Investment Decision timeline.

Palladium market shifts shaping project economics 

The structural economics of the Gonneville project are heavily exposed to international palladium market dynamics, which have experienced notable volatility and policy shifts in recent months. Historically, the global platinum group metals (PGM) market has relied on deep, aging mines in South Africa and permafrost-exposed deposits in Russia - regions facing ongoing inflationary pressures and operational vulnerabilities. In early 2026, global supply chains adjusted to major policy updates from the United States Department of Commerce. Following an affirmative determination that Russia had been dumping unwrought palladium in Western markets, the US government imposed a 133% preliminary anti-dumping tariff on Russian palladium imports.

Because Russia supplies roughly 40% of the world's palladium, these sanctions have effectively split the market, generating an immediate structural premium for non-Russian, Western-aligned PGM sources. Concurrently, global automotive demand has shifted, with hybrid vehicles - which utilise palladium-based catalytic converters - maintaining stable global market traction. These elements contributed to a multi-year spot high for palladium of ~US$2,160 per ounce in January 2026. While spot markets have since consolidated around US$1,450 per ounce , prevailing prices sit comfortably above Chalice’s conservative base-case mine planning metric of US$1,300 per ounce, bolstering projected project margins.

Established infrastructure supporting permitting momentum 

Unlike many frontier critical mineral projects requiring massive, standalone expenditures on legacy logistics networks, Gonneville sits adjacent to established industrial networks in Western Australia. Process water requirements are slated to be filled via a planned 63km pipeline routing treated wastewater from the Water Corporation's Alkimos treatment plant - diverting industrial outflow that would otherwise dump into the ocean. Pilot operations running this wastewater source confirmed that the treated water chemistry meets Perth drinking guidelines, confirming its suitability for industrial flotation circuits without impacting target metallurgical recoveries.

Power arrangements involve a proposed grid connection to the South West Interconnected System via a new 27km dual-circuit transmission line, balanced by an on-site hybrid solar-battery setup. Because the site sits within normal commuting distance of Perth, Chalice intends to operate Gonneville with a fully residential operations workforce of roughly 500 FTEs, avoiding the high capital and social overheads of a traditional Fly-In, Fly-Out (FIFO) remote camp setup.

The master permitting pathway is advancing sequentially. Following initial project referral in early 2024 , the development has been granted Western Australian Strategic Project Status and Commonwealth Major Project Status. Environmental consultants are assembling the formal Environmental Review Documents (ERDs) for official submission to state and federal regulators by the fourth quarter of 2026. Management estimates that the subsequent regulatory assessment and public comment cycles position the critical path for a ministerial decision by the first half of 2028.

Capital strategy focused on debt-led project funding 

The estimated pre-production development capital expenditure for Stage 1 (a 5 million tonne per annum processing footprint) stands at A$820 million. Process plant construction represents the single largest component at A$350 million, supported by indirect and EPCM requirements of A$150 million, site infrastructure at A$95 million, a double-lined tailings storage facility at A$84 million, mine pre-development at A$79 million, and an initial contingency allocation of A$66 million. An expansion to Stage 2 (scaling up to 13–14 million tonnes per annum) is modeled to require an additional A$840 million later in the mine life, funded primarily through project operating cash flows.

Chalice's financing strategy focuses heavily on sovereign debt programs, export credit agencies, and strategic off-take advance agreements, moving away from dilutive equity tranches. Initial advice gathered by debt advisors suggests that up to 60% to 70% of the pre-production capital can be funded through senior debt facilities, supported by the project's projected cash cost profile. At base-case price metrics, Gonneville's estimated all-in sustaining cost is US$370 per ounce 3E, driven down by robust copper and nickel co-product credits. The company is in preliminary discussions with institutions such as Export Finance Australia, the National Reconstruction Fund Corporation, and international sovereign credit entities. These institutions seek to secure long-term access to critical materials for their domestic auto and defense supply chains.

Exploration pipeline expanding future growth optionality 

While Gonneville remains Chalice's flagship asset, exploration work has expanded across its broader regional landholding. This initiative aims to identify alternative copper and gold projects unburdened by high concentrations of PGMs.

During the first quarter of 2026, exploration field crews isolated a coherent, 2.5km long copper-molybdenum-silver soil anomaly at the Deep Blue target within the Northam Joint Venture in Western Australia. Located 15km along strike from Caravel Minerals’ large undeveloped Caravel copper resource, the Deep Blue anomaly returned peak values of 890ppm copper against regional baselines of roughly 50ppm. Ground gravity surveys are underway on-site to map the deeper intrusive contacts, with reverse circulation exploration drilling scheduled to begin in mid-2026.

Concurrently, Chalice expanded its geographical footprint outside Western Australia through an earn-in agreement with Red Metal Limited across the Callabonna Project in South Australia’s Curnamona Province. This joint venture targets covered Iron-Oxide Copper-Gold (IOCG) systems. The company has identified three priority gravity-magnetic anomalies at depths between 400 and 750 meters. Strategic diamond drilling is scheduled to begin in the third quarter of 2026. In the Northern Territory, Chalice finalised access agreements with the Central Land Council for the Warrego North Project. This agreement clears the way for the company to begin exploration on four historical gravity-magnetic anomalies within the Tennant Creek Mineral Field. These anomalies have been restricted from exploration since 2018 due to permitting access.

By advancing these early-stage exploration targets alongside the Gonneville project, Chalice Mining aims to balance its portfolio between long-term development assets and near-term greenfield exploration potential.