Resource Adequacy: Critical Minerals — It Was Never About the Rocks
The ore was in every hillside from the eastern marches to the sea, and any lord could dig it. But there was one valley that knew how to work it, and had known for a hundred years, and held the only furnaces built to the purpose — and so it did not matter in the least who owned the hills.
The Wrong Mental Model
The phrase “critical minerals” invites a scarcity story — a picture of finite deposits depleting toward exhaustion, with nations racing to claim what remains. That framing is almost entirely wrong, and holding it leads to systematically bad conclusions about where the risk actually sits.
The minerals underpinning the energy transition are, with few exceptions, geologically abundant and widely distributed. Reserves are not the binding constraint. What is scarce is the industrial capacity to turn ore into a material a manufacturer can actually use — battery-grade graphite, separated heavy rare earths, refined lithium chemicals. That capacity is concentrated to a degree that has no parallel in other commodity systems, and it is concentrated in a small number of places.
This is the third piece in the adequacy sequence, and it inverts the pattern of the first two. Power adequacy is about whether enough capacity exists. Water adequacy is about a genuine physical limit in a specific basin. Mineral adequacy is about neither — it is about a processing bottleneck that is entirely man-made, and therefore, in principle, entirely fixable. The interesting question is why, after years of concerted effort and enormous capital, it is not being fixed.
The Chokepoint Is Downstream
Concentration exists at every stage of the mineral chain, but it is far more acute in the higher-value stages. Mining is meaningfully concentrated: in 2025 the Democratic Republic of the Congo accounted for roughly 74% of global cobalt mine production, Indonesia for about 67% of nickel, and China for around 69% of rare earth mining. Those are large shares, but mines can be opened elsewhere, and are being.
Refining is a different order of problem. Excluding rare earths, the average share held by the top refining country reached 72% in 2025, up from 70% in 2023. That direction of travel is the single most important fact in this piece. Through a period of unprecedented policy attention, subsidy and private investment aimed squarely at diversification, dependence on the dominant refiner increased.
The mechanism behind that is worth stating precisely. Over the past two years, the top refining countries — Indonesia for nickel, China for most other key energy minerals — accounted for more than three quarters of all growth in refined supply. In several markets, including manganese, nickel and graphite, virtually all supply growth came from the dominant supplier. Demand grew, and the incumbent met it, because the incumbent was the only participant able to add capacity at speed.
Owning the deposit is not owning the supply chain. The furnace matters more than the hill.
A country can hold world-class reserves and remain entirely dependent, because ore has to be refined before it is useful, and refining capability is what is genuinely scarce. This explains a pattern that otherwise looks irrational: the proliferation of mining projects and offtake agreements that do not reduce strategic exposure at all, because the material still has to travel to the same handful of processing facilities. For any mineral-exposed investment, the diligence question is not where the ore comes from but where it gets refined — and whether that step has an alternative.
The Risk Map, Mineral by Mineral
The exposures are not uniform, and treating “critical minerals” as a single asset class obscures risks that differ by an order of magnitude.
| Mineral | Nature of the risk | Assessment |
|---|---|---|
| Graphite | Near-total external dependency — supply outside the dominant producer projected to meet only ~10% of 2030 demand | Most exposed. No other major industrial mineral carries this degree of single-source reliance. |
| Rare earths (heavy) | Export controls have produced severe regional price bifurcation — the same material trading at different prices in different blocs | Acute, but improving. The one area where diversification is measurably working. |
| Cobalt | A deficit emerging by 2035 created by export quotas, not by geology | Policy-made. The ore has not run out; access has been administratively restricted. |
| Lithium | Refining concentration, against demand projected to rise ~353% between 2024 and 2040 | High risk, narrowing gap. New projects have improved the supply outlook, but deficits persist through 2035. |
| Copper | Not exotic and not concentrated — simply required in enormous and rising volume, with long permitting and development lead times | A volume problem. Deficits projected through 2035; the constraint is how fast mines can be built. |
Cobalt deserves particular attention, because it is the cleanest illustration of the theme. The Democratic Republic of the Congo holds the world’s largest cobalt reserves. The deficit forecast to emerge by 2035 exists not because the ore is exhausted but because an export quota has restricted access to it. That is a supply constraint created by an administrative decision, which means it can be reversed by another one — and it should be modelled as policy risk rather than resource risk.
The Second Chokepoint: Equipment and Know-How
If refining capacity is the bottleneck, the obvious response is to build refineries. Here the problem acquires a second layer that receives far too little attention.
Outside the dominant supplier, equipment providers are limited, lead times are long, and the accumulated technical know-how takes years to develop. Only a handful of suppliers worldwide provide key battery-grade graphite processing equipment. Ultra-high-purity gallium refining sits with a similarly narrow group. Building a refinery is not merely a matter of capital and permits; it requires specialised plant that few can manufacture and operating expertise that takes a decade to accumulate.
That vulnerability has become an explicit instrument. New export controls have been extended to cover equipment for processing rare earths — not the minerals themselves, but the machines needed to refine them and to produce permanent magnets. The effect is to constrain emerging projects precisely at the point where they would otherwise begin displacing incumbent supply.
This is the conclusion that should reshape how mineral-security investments are underwritten. Money is not the scarce input — capital has been abundantly available for diversification projects for several years. What is scarce is the equipment to build a plant with, the engineers to run it, and the years required to reach commercial yield. An announcement of a new refinery is therefore worth far less than confirmation that it has secured processing equipment and technical staff. Judge these projects on their supply chain for capability, not their supply chain for ore.
The Economics Almost Nobody States
Here is the finding most likely to change a reader’s view, because it contradicts the assumption underneath most commentary on this subject — that diversified supply chains would be prohibitively expensive.
Critical minerals account for a remarkably small share of the price of the products that depend on them. Minerals make up roughly a quarter of battery cell costs but only about 3% of the price of an average electric vehicle. Rare earths represent around 40% of the cost of a permanent magnet but less than 1% of a vehicle’s value.
The premium for supply security is real at the mine and almost invisible at the showroom.
If minerals are 3% of an electric vehicle’s price, then even a substantial premium for non-concentrated supply translates into a trivial change in the final price. The economic case against diversification is therefore much weaker than it is usually assumed to be — the additional cost can be absorbed with limited consumer impact. Which returns the analysis to the previous section: if the barrier is not cost, then it is time, equipment and expertise. Those are solvable too, but not by paying more.
The One That Is Working
A piece in this thread should be careful to report the counter-evidence, and in this case it is genuinely encouraging. Rare earth refining — historically the most concentrated link in the entire chain — is the exception to the worsening trend.
The mechanism matters more than the numbers. This did not happen through market forces — it happened through targeted policy and sustained investment support aimed at a specific stage of a specific chain. Diversification is demonstrably achievable; it simply requires deliberate, sustained and narrowly-focused intervention rather than general encouragement. That is a replicable template, and graphite is the obvious candidate for it.
The qualification is that the projected path to 70% depends on planned projects arriving on schedule — and the export controls on processing equipment described earlier are aimed precisely at making that harder.
Reading It Through the Frameworks
Where is the physical risk mispriced? In the assumption that mine ownership confers supply security. A portfolio can hold diversified mining exposure and remain entirely concentrated at the refining step — a single point of failure that does not appear in any geographic breakdown of assets. That gap between apparent and actual diversification is the mispricing this piece exists to name.
Where does policy become the cash flow? More directly here than almost anywhere. Roughly a hundred new export measures since 2020, quotas that manufacture deficits, and controls extending to processing equipment mean that mineral availability is now substantially a function of trade policy. Prices rebounded through 2025 and early 2026 as supply tightened, amplified by those restrictions. Meanwhile 58 bilateral partnerships signed since 2022 are actively redrawing the map — and the risk that trade fragments into competing blocs is a live one, with price bifurcation in heavy rare earths already visible.
Is this a moat or a bottleneck? Both, in the primer’s sense — and unusually clearly. For an incumbent refiner, decades of accumulated process expertise and equipment supply constitute a moat that capital alone cannot cross quickly. For everyone else it is a bottleneck. The durable value sits with whoever holds qualified processing capability, which is a far narrower group than those holding reserves.
Critical mineral risk is not a scarcity story and should not be analysed as one. The rocks are abundant and widely spread; what is concentrated is the industrial capability to refine them, and that concentration increased through the very period in which the world was trying hardest to reduce it — because the incumbent was the only participant able to add capacity fast enough to meet demand growth.
Three conclusions carry. First, judge exposure at the refining step, because owning a mine is not owning a supply chain. Second, the binding constraint is equipment and expertise rather than capital — minerals are only about 3% of an electric vehicle’s price, so cost was never the real obstacle. Third, diversification demonstrably works when it is targeted, as rare earths have shown. The ore was never the hard part. The furnace was.
They bought the hills at great price, and dug them, and carted the ore away in triumph — along the same road as before, to the same valley as before, where the same furnaces waited and the same terms were offered. It is a curious kind of independence that must be delivered to a neighbour’s door before it is worth anything.
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