In March 2026, Canadian Prime Minister Mark Carney travelled to Australia and stood before the Australian parliament with a striking phrase: the two countries, he said, are "strategic cousins" and "critical mineral superpowers." The visit produced a set of new partnerships covering critical minerals, defence, security, energy, artificial intelligence and investment — and it marked Australia's entry into the G7 Critical Minerals Production Alliance. The trip was part of a wider 10-day tour that also took in India and Japan. But what are critical minerals, and why are two mid-sized Western democracies on opposite sides of the Pacific suddenly calling themselves mineral superpowers?

What Are Critical Minerals?

Critical minerals are the raw materials that modern economies cannot function without and that are vulnerable to supply disruptions. The exact list differs by country, but the usual names include lithium, cobalt, nickel, graphite, copper and the so-called rare earth elements — a group of 17 metals used in everything from electric vehicle batteries and wind turbines to smartphones, fighter jets and medical imaging machines.

The "critical" part does not necessarily mean the mineral is rare in the ground. Lithium, for example, is relatively abundant. What makes a mineral critical is some combination of economic importance, few viable substitutes, and a supply chain concentrated in one or two countries. When most of the world's processing of a vital material happens in a single place, any trade dispute, export restriction or geopolitical shock can send prices soaring and production lines grinding to a halt.

This is exactly what happened over the past decade. Manufacturers discovered that the green energy transition — electric cars, solar panels, grid-scale batteries — depends on the same handful of minerals that also underpin defence technology and consumer electronics. Governments from Washington to Tokyo have responded by racing to secure their own supply lines, both by mining at home and by partnering with countries they trust. That is the context in which the Canada-Australia pact was signed.

What Happened During Carney's Visit?

According to reports from Reuters, Hindustan Times and NDTV, Carney's address to the Australian parliament framed the relationship as a natural alliance of two resource-rich, like-minded nations. The signed partnerships spanned critical minerals, defence, security, energy, artificial intelligence and investment — a notably broad package that treats mineral cooperation as one strand of a deeper strategic relationship rather than a simple trade deal.

The headline announcement for the minerals sector was Australia joining the G7 Critical Minerals Production Alliance. The two leaders also committed to closer links between Australia's Critical Minerals Strategic Reserve and Canada's Critical Minerals Sovereign Fund, and welcomed a Canada–Australia mining skills exchange pilot programme. The alliance is a grouping of advanced economies working to make supply chains for critical minerals more secure, transparent and diversified — in practice, an effort to reduce dependence on any single supplier for the metals that power clean energy and high technology. Australia is one of the world's largest producers of several critical minerals, including lithium, cobalt and rare earths, so its formal entry strengthens the bloc considerably.

The visit was part of a longer 10-day diplomatic tour that also included India and Japan, signalling that Canada is actively courting Indo-Pacific partners on minerals, energy and security at the same time. For Australia, hosting the Canadian leader offered a chance to cement its role as a preferred supplier to Western-aligned economies seeking alternatives to concentrated supply chains.

Why "Critical Mineral Superpowers"?

The phrase is less of an exaggeration than it might sound. Together, Canada and Australia hold some of the world's largest reserves of the minerals that matter most to the energy transition:

  • Australia is the world's largest producer of lithium and a major source of rare earths, cobalt, nickel and manganese.
  • Canada holds significant reserves of nickel, cobalt, graphite, lithium and rare earth elements, and has been moving to build domestic processing capacity.

Mining, however, is only half the battle. The harder part is processing and refining — turning raw ore into battery-grade chemicals and magnets. This is where Western supply chains are weakest, and where cooperation between mining powers could make a real difference: shared investment in processing plants, joint research into cleaner extraction methods, and coordinated standards for responsible mining.

Economists have long noted that mineral wealth can be a double-edged sword for national economies — boosting exports and GDP while making a country dependent on volatile commodity prices. For both Canada and Australia, the strategic pitch is different: use mineral partnerships to add value at home through processing and manufacturing, rather than simply shipping ore abroad.

Why It Matters Beyond Mining

The pact matters because critical minerals sit at the intersection of climate policy, industrial strategy and national security. The batteries that store wind and solar power, the magnets in electric motors, and the chips in military hardware all depend on these materials. Whoever controls the supply chain has leverage — not just economic leverage, but geopolitical leverage too.

For democratic allies, the lesson of recent years has been that supply chains are not politically neutral. A coalition of trusted suppliers — what policy experts sometimes call "friend-shoring" — is meant to ensure that the minerals powering the clean-energy transition do not become tools of coercion. The G7 Critical Minerals Production Alliance is the institutional expression of that idea, and Australia's membership brings one of the world's largest mineral producers inside the tent.

It also matters for ordinary citizens in both countries, though more subtly than a trade deal on wheat or cars. Mineral partnerships can shape where processing plants and battery factories are built, which influences jobs and regional investment for decades. Both countries are democracies whose governments must justify these long-term bets to voters — a reminder that behind every trade pact lies a democratic process that has to sell the deal at home.

What Happens Next?

A signed partnership is a beginning, not an ending. Several things will determine whether the Canada-Australia minerals pact delivers on its promise:

  • Investment flows: Partnerships need money behind them — joint ventures in mining and processing plants that take years to build and permit.
  • Alliance coordination: Australia's entry into the G7 Critical Minerals Alliance will be tested by how quickly member countries align standards, share research and coordinate stockpiling.
  • Market response: Mineral prices are cyclical; a supply glut could cool the urgency, while export restrictions elsewhere could accelerate it.
  • Environmental scrutiny: New mines and refineries will face environmental review and community consultation in both countries, and responsible-mining credentials are part of the alliance's pitch.

Carney's "strategic cousins" framing was clearly meant to give a memorable label to a relationship that has been quietly deepening for years — Commonwealth ties, similar legal systems, comparable resource endowments. Whether the phrase endures will depend on what the two countries actually build together: mines, refineries, research labs and the supply chains that connect them. For now, the pact signals that the race to secure critical minerals is no longer just an economic story — it is becoming one of the defining diplomatic projects of the decade.