Tearing apart the antimony countdown

Antimony.

If you've heard of it at all, it was probably in a headline three months ago about prices cooling. Bloomberg ran the story: China suspended the export ban, prices fell 36% from their all-time high, crisis averted. CNBC moved on. The consensus exhaled.

They missed the fine print.

China didn't revoke the ban. It suspended it. The suspension expires November 27, 2026. That's 69 days from today. The export licensing regime remains in place. The military end-user clause — which prohibits Chinese antimony from reaching any defense application — was never lifted. And until 2025, the United States had mined zero tonnes of antimony domestically — hadn't since 2001. Small-scale production has since resumed, but output remains negligible.

Here's what antimony actually does. It goes into the primers of every artillery round. The tracers. The armor-piercing cores. More than 200 types of US military munitions require it. It's the synergist in half the fire retardants that keep buildings, electronics, and aircraft interiors from burning. And over the last five years, solar PV glass has quietly become its biggest growth market — sodium antimonate demand has more than quadrupled from 16,000 tonnes in 2021 to a forecast 68,000 tonnes this year, equivalent to roughly 43,000 tonnes of contained antimony.

Three completely different demand pillars — defense, construction safety, clean energy — all pulling on the same supply that three countries control and one country dominates.

The market isn't pricing a countdown. It's pricing relief that hasn't been earned.

Numbers.

China mined approximately 40,000 tonnes of antimony in 2025. Russia produced 32,000. Tajikistan, 22,000 — its largest mine controlled by a US firm. Together, those three countries account for roughly 86% of global mine production. The United States produced only negligible quantities.

The market has been in structural deficit since 2022. Four consecutive years of consuming more antimony than the world mines. Chinese output came in 33% below 2021 levels as its richest deposits deplete — Hunan, the country's top producing province, halted production for months in 2024 during environmental audits and never fully recovered.

Meanwhile, demand exploded from a direction nobody's models anticipated. Photovoltaic glass now absorbs an estimated 39% of global antimony consumption, up from 11% five years ago. Fire retardants take another 49% of US demand alone. Military consumption is surging — the Pentagon ramped 155mm artillery shell output 178% since 2022, and every primer, tracer, and armor-piercing round needs antimony to function.

Three demand pillars. One shrinking supply base. Here's the flow:

On the supply side, the pipeline is a desert. Perpetua Resources broke ground at the Stibnite gold-antimony project in Idaho — $2.58 billion, construction started October 2025. First production: 2029. Three years away. Larvotto Resources commenced output at Hillgrove in New South Wales last month. Annual target: 4,900 tonnes, roughly 7% of global demand. It's the single most significant new Western source in years. It would cover about half of non-Chinese supply by itself.

Impressive. Also a rounding error against a 93,000-tonne ex-China demand forecast by 2030.

By 2030, even if every proposed smelter outside China and Russia gets built — one in Oman, two in the US — total ex-China processing capacity reaches 68,000 tonnes. Projected ex-China demand: 93,000 tonnes. That's a 25,000-tonne structural processing deficit, assuming everything goes right. Nothing in mining ever goes right on schedule.

The Pentagon's antimony inventory stood at just 1,100 metric tonnes prior to the recent rebuild — a fraction of wartime requirements.

In June, the Defense Logistics Agency awarded US Antimony Corporation a sole-source, $245 million contract to supply 3,026 tonnes of antimony ingots to the National Defense Stockpile over five years. First deliveries began in Q2 2026. In March, the Department of War added $27 million in Defense Production Act funding to expand UAMY's domestic processing — currently scaling toward 400–500 tonnes per month.

Do the math. At 400–500 tonnes per month, UAMY can deliver up to 6,000 tonnes per year at full capacity. The DLA contract calls for roughly 600 tonnes per year over five years. That's the restocking rate. For one customer. Meanwhile, civilian demand — fire retardants, solar glass, electronics — continues pulling from the same constrained global pool. There isn't enough antimony in circulation to rebuild a strategic stockpile and supply domestic industry simultaneously. It's like trying to refill a swimming pool through a garden hose while three neighbors are running theirs off the same line.

And here's the part that should make positioning uncomfortable. The November 27 suspension was a trade-truce gesture. It was paired with identical suspensions on gallium, germanium, and superhard materials. If the US-China relationship deteriorates — a Taiwan incident, a new tariff escalation, any number of plausible triggers — Beijing has already demonstrated it will flip the switch. It did it once in December 2024. The suspension itself proves the ban works as a weapon.

The market priced the relief. It hasn't priced the reversion.

I've watched this pattern with other critical materials. The market treats a temporary suspension as a permanent resolution. Then the expiry date arrives and suddenly everyone remembers that a suspended ban is still a ban. I remember the gallium panic clearly enough. The people who got burned were the ones who assumed the truce was the treaty.

November 27 creates a binary fork. Both paths lead to the same destination. They just take different routes.

If the ban snaps back, the first thing that moves is spot price. The all-time high of $59,750 per tonne — set July 4, 2025 — becomes the floor, not the ceiling. Rotterdam inventories tighten within weeks. The Pentagon's stockpile rebuild stalls before it starts. The 155mm shell lines that ramped 178% suddenly can't source primers. The solar buildout — already on track to consume 68,000 tonnes of sodium antimonate this year — starts competing with defense procurement for the same molecules.

If the suspension extends, the market exhales — briefly. But the structural deficit doesn't close. Chinese mine output keeps declining. Solar demand keeps climbing. The four-year inventory drawdown continues. You buy time. You don't buy a solution.

Where does capital go? Not into the broad critical-minerals basket. Not into diversified miners with antimony as a footnote. The edge — if there is one — is in the companies directly exposed to antimony spot.

US Antimony Corp (UAMY) holds the sole Pentagon supply contract and the only operating US smelter. Perpetua Resources (PPTA) is building the only domestic mine — a $2.58 billion project in Idaho with antimony as a primary product, first production 2029. Larvotto Resources (LRV.AX) just became Australia's largest antimony producer when Hillgrove shipped first concentrate last month. These are small companies in a small market that's about to collide with a very large deadline.

In my experience, small markets with binary catalysts and structural deficits don't resolve quietly. The global antimony market is roughly $2–3 billion. The forces acting on it — defense procurement, solar buildout, Chinese resource nationalism — are orders of magnitude larger. When an elephant steps into a kiddie pool, you don't watch the elephant. You watch the water.

Sixty-nine days.