As industries decarbonize and green hydrogen moves from pilot projects to real deployment, iridium has become one of the most strategically important and misunderstood metals in the world. Clients often assume that if prices rise, miners will produce more. That logic works for many commodities. It does not work for iridium.
The reason is simple but critical: iridium is not mined on its own. Roughly 85% to 88% of global iridium supply comes from South Africa, and almost all of it is recovered as a minor byproduct of mining other platinum group metals (PGMs), especially platinum, palladium, and rhodium. That means iridium supply is not driven by iridium demand. The economics, geology, and operating conditions of the broader PGM sector drive it. For any company that uses iridium or may need it indirectly through catalysts, electrolysis equipment, electronics, or specialty industrial hardware, this has major implications for pricing, procurement, recycling, and long-term supply security.
Iridium is one of the rarest elements in the Earth’s crust. Economically recoverable material is heavily concentrated in a few PGM ore bodies, above all in South Africa’s Bushveld Igneous Complex, the dominant global source of platinum group metals. The key mining horizons are the Merensky Reef, UG2 Reef, and Platreef.
Even in these deposits, iridium is only a tiny fraction of the metal content. It typically represents a low single-digit share of the total PGM “prill split.” In other words, a miner cannot target iridium in any meaningful standalone way. To get more iridium, the operator must mine and process much larger volumes of ore for the whole basket of PGMs. This is why there are no dedicated primary iridium mines anywhere in the world. And realistically, there will not be. The metal is too scarce, too diffuse, and too dependent on co-occurring PGMs to support standalone mining economics.
South Africa’s dominance is not just large; it is decisive. The country accounts for the overwhelming majority of global output of the minor PGMs, including iridium, rhodium, and ruthenium. Zimbabwe, Russia, and Canada produce smaller volumes of byproducts, but none come close to South Africa’s scale.
That concentration creates a structural fragility. When one country supplies nearly all of a strategic metal, any local issue, such as power shortages, labor disruption, rail congestion, smelter outages, policy risk, or currency instability, can affect global availability. For iridium, there is no broad, diversified mine base ready to compensate. The supply chain is geographically concentrated and inherently brittle.
The key misconception in the market is that iridium is treated as a primary commodity. It does not. In classical supply economics, rising prices incentivize producers to expand output. But iridium production is almost completely inelastic because miners do not make investment decisions based on iridium prices. They are based on the total PGM basket price, especially for platinum, palladium, and rhodium, plus some base metal credits. So even if iridium prices surge, miners will not necessarily increase production unless the broader basket supports profitable mining. That is the crux of the issue: iridium is financially subordinate to other metals. A mine shaft is not funded because iridium is expensive. It is funded if the whole ore body generates acceptable returns. Since iridium is only a very small part of the total recoverable value, its price alone cannot justify billions in new capital expenditure for deeper shafts, new concentrators, or expanded smelting capacity.
Over time, South African mining has shifted from the historically favored Merensky Reef toward the UG2 Reef. UG2 ore tends to contain a prill split relatively richer in ruthenium and iridium than other major PGM ore bodies. This has helped increase iridium output over the past two decades.
But that does not solve the structural problem.UG2 is also more metallurgically challenging because of its high chromite content. Deeper mining raises costs, and ore grades degrade over time. Recovery becomes more complex as mineralization changes and more PGM minerals are trapped within silicates and chromite. So while UG2 has been important for iridium supply, it remains subject to the same limitations: difficult mining, finite grades, and dependence on broader PGM economics.
The fate of iridium supply is tied mainly to palladium and rhodium, which historically derived much of their demand from automotive catalytic converters. When those prices are strong, mines can support high-cost underground operations. When they weaken, margins compress and production is cut.
That dynamic was visible in the severe PGM downturn from 2023 through 2025. Palladium prices fell sharply. Rhodium, which had previously been a major profit engine for South African producers, also collapsed. As a result, major mining companies reported severe margin pressure, deteriorating cash flows, losses, impairments, and output cuts. During that same period, iridium prices remained elevated. But high iridium prices did not prevent retrenchment. They could not. Iridium contributes too little to total mine economics. This is the most important message for clients: even record iridium prices cannot compel the mining industry to produce materially more iridium if the economics of platinum, palladium, and rhodium are weak.
Even if market conditions were favorable, South African primary supply faces persistent operational constraints. Deep underground PGM mining requires reliable power for hoisting, ventilation, concentration, and smelting. South Africa’s grid instability and periodic load shedding directly affect production. Rail and logistics failures can delay concentrated movement and the delivery of refined metal. Cost inflation in labor, electricity, and consumables further pressures margins. These are not temporary inconveniences. They are structural features of the operating environment. Together, they cap responsiveness and make the supply chain more volatile. So the issue is not just that iridium is a byproduct. It is the byproduct that comes from one of the world’s most operationally constrained mining regions.
While supply remains rigid, demand is being reshaped by the energy transition. Iridium plays a critical role in proton exchange membrane (PEM) water electrolyzers, serving as the leading catalyst for the oxygen evolution reaction at the anode. This is one of the harshest electrochemical environments in industrial technology: high acidity, high voltage, and strongly oxidizing conditions. Iridium remains the benchmark because of its exceptional combination of catalytic performance and corrosion resistance.
As green hydrogen investment expands, deployment of PEM electrolyzers is expected to increase significantly. That creates a new demand channel for iridium that is strategic, durable, and not fully substitutable.
The problem is obvious: a metal with a stagnant, byproduct-based supply is now being asked to support a major new decarbonization industry.
To address this bottleneck, manufacturers and materials companies are aggressively reducing iridium loading in PEM systems. New catalyst and coating technologies are targeting dramatic cuts in iridium intensity per gigawatt of electrolyzer capacity.
These advances matter. Lower loading reduces cost and stretches available supply. But thrifting is not the same as substitution, and it has limits. Even if each unit uses less iridium, total deployment can still outpace savings if installed capacity rises fast enough. In other words, efficiency improvements may slow the problem, but they do not remove the underlying supply constraint. The market, therefore, is likely to face structural deficits over the long term.
Iridium pricing over the last decade has shown extreme volatility, including a dramatic rise from relatively modest levels in 2020 to several times higher in the years that followed. By 2026, prices around $7,300 to $7,400 per troy ounce underscored how scarce and strategic the metal had become.
Yet these prices should not be interpreted as a reliable signal of future mine expansion. In iridium, high prices reflect scarcity more than supply response. That makes the market unusually difficult for end-users. Prices can move violently, but physical availability may remain tight. Spot procurement becomes risky, and the absence of deep market liquidity amplifies volatility.
Because primary supply cannot scale elastically, recycled iridium is the only meaningful flexible source of supply available to the market. This is why secondary recovery has moved from a sustainability topic to a strategic procurement issue. Iridium can be recovered from spent chemical catalysts, mixed-metal oxide anodes, spark plugs, glass industry components, electronics, and eventually from end-of-life PEM electrolyzer materials. Recovering it is technically complex, requiring sophisticated assaying, smelting, leaching, and separation chemistry, but it is feasible and increasingly essential.
Every ounce recovered from scrap avoids dependence on the rigid primary market. Every closed-loop return stream reduces exposure to South African mine disruptions, PGM basket weakness, and spot market shocks. For clients, this changes how “waste” should be viewed. Iridium-bearing scrap is not disposal material. It is a strategic inventory position.
Secondary iridium also offers strong environmental benefits. Primary PGM mining is energy- and water-intensive and emissions-heavy, especially where electricity generation relies heavily on coal. Recycling bypasses most of that footprint.
Major refiners have shown that precious metal recovery from established recycling flows can have dramatically lower carbon intensity than primary mining, sometimes by as much as 99%. That matters not just for sustainability reporting but also for compliance, Scope 3 reduction, and future carbon border or product passport requirements. Recycled iridium is often the best option both commercially and environmentally.
Iridium sits at the center of a growing contradiction in the modern industrial economy. It is increasingly important to decarbonize, especially for green hydrogen, yet its supply is controlled by a mining system that cannot respond directly to iridium demand.
The world cannot just mine more iridium because iridium is not mined that way. It is geologically rare, economically subordinate, geographically concentrated, and operationally constrained. About 85% to 88% of the supply comes from South Africa as a byproduct of other PGMs, making the market structurally rigid. For that reason, the future of iridium availability will depend less on new mining and more on better recovery, tighter recycling loops, and smarter material stewardship.