Charted: The Physical Inputs the Economy Assumes Will Always Be There
Across 20 mine, midstream, and export stages — from gallium (China ~98%) to graphite (China ~79%) to copper refining (China ~44%) — a handful of countries hold the thin edges of supply. The dashboard ranks concentration, US import reliance, and mine-to-midstream flips.
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Modern economies price energy, labor, and interest rates obsessively. They treat a quieter class of inputs as background: refined gallium for compound semiconductors, natural graphite for battery anodes, separated rare earths for magnets, cobalt chemicals for cathodes, helium for fab purge and MRI magnets, phosphate fertilizers for caloric yield. The U.S. Geological Survey’s Mineral Commodity Summaries 2025 — read as a cross-mineral ledger rather than twenty separate PDFs — answers a blunt question: what physical inputs does the economy assume will always be available, and where is supply thin?
The interactive dashboard above tracks 20 stages (mine, midstream processing, or export). China leads 12 of them. Eight stages have a single country above 70% of world output. Gallium refining sits near 98% China. Natural graphite mining sits near 79% China. Copper’s midstream story — China refining ~44% while mining ~8% — still looks mild next to gallium, yet it is the everyday metal that wires grids and EVs. Pair this synthesis with our copper mine vs refinery geography deep dive and our natural graphite mine concentration map: those posts zoom one mineral; this one ranks the thin edges together.
The silent assumptions
Markets and models usually assume:
- Continuity of mine output in a handful of jurisdictions (Chilean copper, Congolese cobalt, Australian lithium, Moroccan phosphate rock, South African platinum).
- Continuity of midstream chemistrysmelting, refining, separation, anode coating, chemical conversion — often in a different country than the pit.
- Continuity of export licenses for processed fertilizers and strategic metals, even when mine reserves look abundant.
- Substitutability on policy timescalesthat gallium, helium, or separated NdPr can be replaced or ramped elsewhere inside an election cycle.
Those assumptions are usually fine until they are not. Export controls, mine disruptions, processing bottlenecks, and shipping chokepoints do not show up as “commodity scarcity” in the same way a wheat drought does; they show up as lead-time spikes, qualification delays, and single-vendor dependencies inside already complex supply chains. The dashboard’s scatter panel puts top-1 country share against US net import reliance: the upper-right quadrant is where concentration and US exposure compound.
A cross-mineral scoreboard
Selected 2024e stages from the ledger (USGS MCS 2025 primary; IEA processing shares labeled secondary in the data module):
| Stage | Leader | Top-1 share | Top-3 share | US net import reliance |
|---|---|---|---|---|
| Gallium (refined) | China | ~98% | ~99% | 100% |
| Graphite anode processing (IEA) | China | ~90% | ~95% | 100% |
| Rare-earth separation | China | ~90% | ~98% | ~80% |
| Tungsten (mine) | China | ~83% | ~92% | ~50% |
| Natural graphite (mine) | China | ~79% | ~90% | 100% |
| Cobalt (refined) | China | ~76% | ~90% | ~76% |
| Cobalt (mine) | Congo (Kinshasa) | ~74% | ~85% | ~76% |
| Platinum (mine) | South Africa | ~71% | ~92% | ~79% |
| Rare earths (mine) | China | ~69% | ~88% | ~80% |
| Lithium chemicals (IEA) | China | ~65% | ~85% | ~25% |
| Germanium (refined) | China | ~60% | ~85% | ~50% |
| Nickel (mine) | Indonesia | ~50% | ~70% | ~48% |
| Antimony (mine) | China | ~48% | ~78% | ~85% |
| Copper (refined) | China | ~44% | ~60% | ~45% |
| Phosphate rock (mine) | China | ~41% | ~68% | ~9% |
| Helium (production) | United States | ~40% | ~85% | ~0% |
| Lithium (mine) | Australia | ~37% | ~78% | ~25% |
| Phosphate fertilizer exports | Morocco | ~28% | ~67% | ~9% |
| Copper (mine) | Chile | ~23% | ~48% | ~45% |
Read the table as stages, not as “minerals.” Graphite mine concentration and graphite anode processing are different chokepoints. Cobalt mine (DRC) and cobalt refine (China) are different chokepoints. Copper dig (Chile) and copper refine (China) are different chokepoints. Policy that only counts pits will mis-target.
Mine monopolies versus midstream monopolies
The dashboard’s Mine → midstream panel isolates five families where both ends of the chain are measured:
- Graphite and rare earths: China already leads the mine and the midstream. Diversifying pits without diversifying separation or anode plants leaves the binding constraint untouched.
- Cobalt: Congo (Kinshasa) dominates dug tons; China dominates refined metal. That is a classic stage flipAfrican mine risk plus Asian processing risk.
- Lithium: Australia leads the mine map (~37%); China leads chemicals (~65%). The public narrative often stops at spodumene prices; the industrial narrative is conversion capacity.
- Copper: Chile leads mine tons (~23%); China leads refining (~44%) while mining only ~8%. Our dedicated copper geography post unpacks the dumbbells; here the point is comparative: copper midstream concentration is moderate next to gallium or graphite anode, yet copper tonnage is enormous, so absolute midstream throughput at risk is still vast.
Midstream is where assumptions hide. Mines are visible on satellite imagery and in USGS tables. Separation plants, anode coaters, and specialty refiners are fewer, harder to permit, and slower to qualify for aerospace, auto, and fab customers. A country can “onshore mining” and still import the chemical form that actually enters a cathode or wafer line.
Batteries, chips, and food are not the same map
Filter the dashboard by sector and the geography rearranges:
- Batteries & EVs: Graphite mine (~79% China), graphite anode (~90% China), cobalt mine (DRC), cobalt refine (China), nickel (Indonesia), lithium mine (Australia) vs lithium chemicals (China). The anode and chemical layers are often tighter than the lithium pit layer.
- Semiconductors: Gallium and germanium refining, helium, tungsten, antimonya stack of specialty inputs with extreme or high concentration and high US import reliance on several lines.
- Permanent magnets: Rare-earth mine plus separationChina-heavy at both stages.
- Fertilizers / food: Phosphate rock looks plural enough at first glance; phosphate fertilizer export dependence shows the binding constraint is often processed product trade (Morocco + China + Saudi Arabia near two-thirds of exports), not rock reserves alone.
- Industrial gases: Helium is a US–Qatar–Algeria production storydifferent from China-centric battery metals, but still a thin market with limited substitutes for cryogenic and fab uses. See also global helium supply concentration.
Sector filters matter because “critical minerals” as a single phrase conceals incompatible risk maps. A battery OEM, a foundry, and a fertilizer importer do not share the same chokepoint country — but they do share the structural feature that top-1 shares above ~50% are common, not rare, once you include midstream.
Who holds the most top-1 stages
The Who leads panel counts how many tracked stages each country tops. China sits alone at the top of the scoreboard — not because every mineral is Chinese at the pit, but because midstream chemistry and several mine monopolies overlap. Congo (Kinshasa), Indonesia, Chile, Australia, Morocco, South Africa, Russia, and the United States each lead at least one stage. That plurality is real. It does not cancel China’s midstream gravity.
For the United States specifically, USGS net import reliance is 100% on several lines in this ledger (gallium, natural graphite) and high on cobalt, platinum, antimony, and rare earths. Helium is the exception where the US is a top producer — and even there, global supply is a few-country market. Import reliance is not destiny, but it is the correct denominator for “how fast can domestic policy change the exposure?”
What would change the story
Observables that would force a rewrite of this ledger:
- Gallium or graphite anode top-1 share falling below 70% for two consecutive MCS yearsevidence that non-China refining/processing is scaling, not just announcing.
- Rare-earth separation capacity outside China reaching a durable double-digit world share with auto- and defense-qualified productnot only oxide mining.
- DRC cobalt mine share falling under 50% and refined cobalt outside China risingboth ends of the stage flip moving, not one.
- Copper refine share for China falling toward its mine sharemidstream rebalancing, not just new South American pits.
- Phosphate fertilizer export top-3 share falling under 50% without a parallel spike in export controlsa more plural food-input trade map.
- Sustained helium capacity additions outside the US–Qatar corridor that actually clear into merchant liquid markets.
Until several of those print together, the default forecast is not “running out of rocks.” It is running industrial systems through narrow chemical and jurisdictional gates.
Caveats and methodology
- Stages ≠ minerals. Counting “lithium” once understates midstream concentration; counting every chemical form can double-count narratives. We publish both mine and midstream rows where the data justify it.
- USGS rounded totals. Country and world figures are rounded; shares are approximate. 2024 values are USGS estimates (e).
- IEA processing shares (graphite anode, lithium chemicals, some rare-earth separation narrative) are secondary and labeled as suchnot interchangeable with USGS mine tables.
- HHI values are approximate, constructed from leading-country shares for ranking, not a full reconstructed global distribution for every mineral.
- Substitution difficulty is a 1–5 editorial score for near-term industrial substitutability, not a lab property.
- US net import reliance follows USGS MCS definitions; a low reliance number can coexist with concentrated global supply (helium, phosphate rock).
- Export-stage phosphate uses fertilizer-trade sources distinct from phosphate-rock mine tablessee the linked fertilizer post for corridor detail.
- This post is a synthesis. For mineral-specific dumbbells and import pies, use the copper, graphite, helium, and phosphate pieces linked above.
The shareable takeaway
The economy’s quiet assumption is that specialty and bulk physical inputs keep flowing through a few jurisdictions. On a 20-stage USGS/IEA ledger, China leads twelve, eight stages clear 70% top-1 share, and midstream chemistry is often tighter than the mine map. Gallium near 98%, graphite mine near 79%, copper refine near 44% against an 8% mine share — different minerals, same structural lesson: availability is a geography of processing and licenses, not just reserves.