QMines (ASX:QML) is aiming to write the next chapter of copper mining in Queensland at Mt Chalmers, 17km north-east of Rockhampton, where a fully funded Definitive Feasibility Study (DFS) is underway. The state’s copper story is more than 150 years old, and QIC, the Queensland Government’s investment arm, has put $15 million behind its newest development project.

Why Queensland Is Australia’s Copper Heartland

Copper mining in Queensland goes back more than 150 years, and the northwest still anchors it. The Mt Isa Inlier hosts a polymetallic system that has produced copper, lead, zinc and silver for decades. Glencore‘s underground copper operations at Mount Isa wound down in mid-2025, with the site’s smelter now processing third-party concentrate, but the Inlier still carries working copper: AIC Mines (ASX:A1M) operates the Eloise copper mine in North Queensland, while production at Capricorn Copper, owned by 29Metals (ASX:29M), remains suspended.

A second, geologically distinct belt runs through Central Queensland: a volcanic-hosted system that includes the Mt Chalmers corridor near Rockhampton. Unlike the remote northwest, this region sits close to sealed highways, existing rail and the Port of Rockhampton, which cuts the logistics cost that weighs on many Australian copper developments.

Both belts sit inside a mining jurisdiction with a long-established framework for exploration permits, environmental approval and mining leases, and the state has spent the past three years actively courting critical minerals investment.

Is Queensland a Good Copper Mining Location?

For an investor weighing sovereign risk against exploration upside, Queensland offers three things in one place: two separate copper belts, established transport and port infrastructure, and a state government that has made critical minerals a stated policy priority. That combination is a large part of the case for looking at Queensland copper exposure specifically, rather than the copper sector in general.

Queensland Government Backing: What Investors Should Know

Copper sits among the critical minerals named in the state’s $245 million Critical Minerals Strategy, released in 2023. In July 2026 the state followed it with Delivering Queensland’s Critical Minerals Future 2026-30, a 2026-30 plan alongside a $146 million Budget investment. The same Budget lifted QIC’s Queensland Critical Minerals Fund to $250 million.

The most direct signal for QMines shareholders is a separate commitment. The QIC $15M investment announcement in April 2026 brought $5 million of equity and $10 million for a 2% net smelter return royalty from the QIC Critical Minerals and Battery Technology Fund, and left Mt Chalmers fully funded through DFS delivery. A state-owned investment corporation backing a single developer’s feasibility study is a different order of validation to a grant or a policy statement. It is capital, committed against a specific project.

The commitment was followed by a physical one. Senior Queensland Government and QIC representatives inspected Mt Chalmers ahead of a joint ministerial statement on 3 July 2026 highlighting the strategic importance of the project, which QMines lodged with the ASX on 6 July 2026.

For investors, backing of this kind could reduce sovereign risk, signals that a project sits inside the state’s own planning, and puts a second set of institutional eyes on the same project economics an investor is evaluating.

Mt Chalmers: One of Queensland’s Most Advanced Copper-Gold Development Projects

The Mt Chalmers copper-gold project sits 17km north-east of Rockhampton in Central Queensland, and it is one of the most advanced copper development projects in the state. Its Mineral Resource is 11.3Mt @ 0.75% Cu and 0.42g/t Au, with 88% in the Measured and Indicated categories. Beneath that sits an Ore Reserve of 9.6Mt @ 0.65% Cu and 0.48g/t Au, first reported in the 2024 Pre-Feasibility Study. Both are reported by a Competent Person under the JORC Code, the industry standard that lets an investor compare resource and reserve figures on a consistent basis.

The Definitive Feasibility Study is the stage that turns a known resource into a costed development plan, covering process design, capital and operating cost estimates, environmental approvals and financing structure. QMines continues to advance that fully funded DFS, and comminution and flotation testwork for it is now underway at ALS Burnie.

Alongside the study, a 129-hole, 20,000m drilling campaign is running across the Mt Chalmers Hub.

What sets Mt Chalmers apart in the Queensland landscape is the combination, not any single element: a JORC-reported resource and reserve, $15 million of committed QIC capital, direct Queensland Government engagement, and road, rail and port access that most northwest Queensland projects do not have.

Develin Creek: The Exploration Stage Opportunity

QMines’ second Central Queensland asset, the Develin Creek copper project, sits about 90km west of Rockhampton at exploration stage. Its Resource stands at 4.70Mt @ 0.94% Cu and 1.0% Zn, and 90% of it sits in the Indicated JORC category.

Where Mt Chalmers is a DFS-stage story, Develin Creek is an exploration-stage one, and an investor should weigh the two differently. Exploration assets carry more geological and permitting risk than a project already in DFS, but they also carry more upside if drilling extends the known resource.

Together they form the core of a Multi-Project Copper & Gold Production Hub QMines is developing in Central Queensland: Mt Chalmers is the near-term development case, and Develin Creek is the resource-growth option sitting behind it.

ASX Companies Mining Copper in Queensland: The Investor Landscape

Which Companies Mine Copper in Queensland?

The Queensland copper cohort on the ASX spans three distinct stages. AIC Mines (ASX:A1M) operates the Eloise copper mine in North Queensland, the producer example in the group. QMines (ASX:QML) is the developer, advancing Mt Chalmers through DFS while holding Develin Creek at exploration stage. True North Copper (ASX:TNC) is exploring at its Mt Oxide project and advancing the Cloncurry Copper Project through scoping, earlier in the cycle again.

None of these belongs in a ranking. They sit at different points on the same development curve, and the more useful question is which stage matches the risk profile an investor is looking for: cash-generating production, a de-risking developer, or early-stage exploration upside.

The Queensland names are one entry point into a much larger field, with more than 200 ASX-listed companies carrying some copper exposure. The ASX copper stocks guide covers that full universe, and this page narrows the lens to the Queensland-specific opportunity within it.

The Investment Case: Why Queensland Copper Now

The macro case for copper, a structural supply deficit meeting rising demand from electrification and the energy transition, is covered in full in our deep dive on copper as an investment. What copper mining in Queensland adds to that thesis is jurisdiction quality: two distinct geological belts, established infrastructure rather than greenfield logistics, and a state government actively deploying capital into the sector rather than merely tolerating it.

The timing signal is worth sitting with. QIC is not a venture fund chasing speculative exploration plays. It is a state-owned investment corporation, and its 2026 commitment to Mt Chalmers, alongside the Budget’s decision to lift the Queensland Critical Minerals Fund to $250 million in the same year, points the same direction: the state’s own capital allocators are backing Queensland copper development.

Exposure to that thesis comes in a few forms. Direct ASX equity in a Queensland-focused developer like QMines is the most concentrated way in. Broader exposure runs through large-cap miners with Queensland copper assets, though their Queensland output is a smaller slice of a much bigger global book. Between those two sits the cohort covered above: producers, developers and explorers, each offering a different mix of risk and stage.

Frequently Asked Questions