The critical minerals market September 2026 delivered one of the more mixed monthly pictures of the year: antimony staged an 18% rebound after three straight months of decline, chromium fell a sharp 12.6% for a third consecutive month of losses, and lithium reversed August’s correction with a broad 9-10% rise across every product tier. Base metals told a more divided story, with copper, nickel, and cobalt all seeing their domestic-international price gaps move in different directions on the same underlying SMM data set. This report covers all 30 metals tracked on CMN’s price pages as of 4-5 September 2026.
Critical Minerals Market September 2026: Standout Moves
| Metal | Move | Direction |
|---|---|---|
| Antimony | +18.0% (China domestic) | Sharp rebound, reverses 3-month decline |
| Chromium | -12.6% (metal) | Third consecutive month of losses |
| Lithium Carbonate | +9.2% (battery-grade) | Reverses August’s 12.1% correction |
| Silver | +15.4% (SMM domestic) | Resolves prior grade divergence |
| Bismuth | +18.4% (international) | Second straight large move |
| Tungsten | -2.0% (APT domestic) | Sharp deceleration from -24.6% in August |
| Cobalt | -11.3% (China domestic) | Domestic/international gap widens to ~24% |
Base Metals: Diverging Domestic-International Gaps
Several of CMN’s dual-benchmarked base metals moved in different directions on their China-domestic versus international spreads this cycle. Copper domestic pricing rose 4.2% against a more modest 1.2% international gain, widening the premium back to roughly 13.6% after August’s narrowing. Nickel did the opposite — both benchmarks eased together, unwinding August’s joint rally that had been driven by Indonesian MHP export inspection delays. Aluminium extended a third straight month of widening domestic premium, now at roughly 9.7%, even as CIF Japan and Thailand regional premiums fell sharply for a second consecutive cycle. Zinc continued converging toward parity, with the domestic-LME gap compressing to just $13.57/tonne. Tin saw its first narrowing after two months of widening, while cobalt moved the other way, with its domestic-international gap nearly doubling to around 24%.
Antimony’s Sharp Reversal
The month’s most significant single move came in antimony, where China’s domestic 99.65% Sb benchmark rebounded 18.0% to $12,874.76/tonne, reversing three consecutive months of decline. Antimony trioxide moved even more sharply, up nearly 28%. Because the European benchmark continued softening over the same period, the China-Europe premium narrowed dramatically — from roughly 95% in August to around 54% this cycle — a partial realisation of the “narrowing spread” thesis independent forecasters had anticipated, though via a China-side rebound rather than the gradual Western catch-down more commonly discussed.
Chromium and Tungsten: Opposite Trend Trajectories
Chromium metal extended its correction for a third straight month, down 12.6% following July’s +7.4% and August’s -5.6%, while ferrochrome and chrome ore both held comparatively steady — evidence the move remains concentrated in the smaller, spot-sensitive pure metal tier rather than reflecting broader steel mill demand. China Chrome Oxide Green fell an outsized 22% and is flagged for second-source verification.
Tungsten told the opposite story: after a documented 24.6% single-month domestic correction in August, the decline decelerated sharply to just 2.0% this cycle, with the CIF Rotterdam Western benchmark easing in step for the first time in several months — a tentative sign the earlier “market fragmentation” between domestic and export pricing may be narrowing.
Battery Materials: Lithium Rebounds, Rare Earths Stabilise
Lithium carbonate reversed course sharply this cycle, with battery-grade, industrial-grade, hydroxide, and spodumene concentrate all rising by a remarkably consistent 9-10%, undoing most of August’s supply-driven correction. Pr-Nd oxide eased a further modest 0.73% to $96.69/kg, remaining below the $110/kg DoD-backed price floor for a second consecutive cycle but with a far smaller move than August’s sharp reversal — a tentative sign of stabilisation below the floor rather than continued volatility. Cobalt sulphate fell 11.4% even as upstream hydroxide payable rates dropped further and processing fees rose again, a divergence that continues to complicate the near-term supply narrative.
Technology and Minor Metals
Tantalum and niobium both showed modest, broadly uniform moves after last cycle’s sharper corrections. Titanium sponge eased further while TC4 aerospace-grade ingot rose slightly, breaking a two-cycle pattern of aerospace-grade stability. Magnesium firmed modestly across all tracked grades. Silicon rose consistently across every SMM grade after several flat-to-declining months. Vanadium metal held essentially flat, while its V2O5 flake benchmark refreshed for the first time in two cycles. Molybdenum oxide firmed modestly, in line with steel-sector demand.
Bismuth posted a second consecutive large move, with the international benchmark up 18.4% — a scale of move that continues to warrant independent verification. Tellurium eased modestly after a sharp prior-cycle correction. Zirconium oxychloride rose a modest 1.3%, while zirconium sponge fell sharply — a move flagged given its comparison baseline was itself two cycles stale. Hafnium and graphite pages were both narrowed this cycle to their available-data benchmarks pending fresher sourcing on secondary product tiers.
Precious and Platinum Group Metals
Platinum and palladium both firmed on SMM’s China-domestic benchmark, up roughly 10% and 7% respectively. Silver‘s SMM domestic benchmark rose a sharp 15.4% across all four tracked grades uniformly, resolving the unusual grade divergence flagged last cycle.
What to Watch in October 2026
Several threads from this cycle carry directly into next month’s update. Whether antimony’s rebound extends or proves a single volatile reading will be the clearest early signal on that market’s direction. Chromium’s third consecutive monthly decline in the pure metal tier, against steady ferrochrome and ore pricing, is worth tracking for whether the divergence persists or the metal tier stabilises. Tungsten’s sharp deceleration and the first joint domestic-international move in months both point toward a possible end to the “market fragmentation” narrative that has dominated coverage since May — October’s reading will help confirm whether that’s a genuine turn. On the data side, restoring fuller coverage on hafnium’s retail benchmark and graphite’s secondary product tiers remains a priority for the next cycle.
Production and reserve context for the metals covered in this report is available via USGS Mineral Commodity Summaries. Broader critical minerals demand trends through the energy transition are tracked by the IEA Critical Minerals programme.
This article is for informational purposes only and does not constitute investment advice. Prices are subject to change without notice.
What is happening in the critical minerals market in September 2026?
Antimony rebounded 18% after three months of decline, chromium fell a further 12.6%, and lithium carbonate reversed August’s correction with a broad 9-10% rise across all tracked grades, while base metals showed mixed domestic-international price divergences.
Why did the antimony price rebound so sharply in September 2026?
China’s domestic antimony benchmark rose 18.0% this cycle, reversing three consecutive months of decline, even as China’s export licensing regime for antimony remains fully in force. The rebound narrowed the China-Europe price gap from roughly 95% to 54%.
Is the tungsten price correction over?
The sharp domestic correction that began in May 2026 decelerated markedly in September, down just 2.0% versus August’s 24.6% single-month drop. The Western Rotterdam benchmark also eased for the first time in step with the domestic figure, a tentative signal worth confirming next cycle.
Which metals had the largest price moves in September 2026?
Antimony (+18.0% domestic), bismuth (+18.4% international), silver (+15.4% domestic), and chromium (-12.6% metal) posted the largest confirmed moves among CMN’s 30 tracked metals this cycle.
How is the rare earth price trending relative to the US DoD price floor?
Pr-Nd oxide traded at $96.69/kg, below the $110/kg DoD-backed floor for a second consecutive cycle, though the month-on-month move was far smaller than August’s sharp reversal, suggesting the market may be settling into a range below the floor.
Did lithium prices recover in September 2026?
Yes. Battery-grade lithium carbonate rose 9.2% to $22,564.99/tonne, reversing most of August’s 12.1% correction, with industrial-grade carbonate, lithium hydroxide, and spodumene concentrate all rising by a similarly consistent margin.
Where can I find individual metal price pages?
CMN maintains dedicated, monthly-updated price pages for all 30 tracked critical minerals, from lithium and cobalt through to tungsten, antimony, and the platinum group metals, each with historical data, currency conversions, and supply chain analysis.
