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The zinc leaves with hidden passengers.

Critical Minerals. Part 3

By — Tecnóloga

Zinc leaves with hidden passengers.

Bolivia is the world's ninth largest exporter of zinc minerals. Inside every tonne of concentrate travel gallium, indium and germanium. Whoever refines, collects them. Bolivia refines abroad. This is the story of the metals we export without seeing, and of the knowledge we need to see them.

98%
of the world's gallium is processed in China (USGS)
~100×
gallium is worth about a hundred times more than zinc per kilo (SMM, July 2026)
9th
largest exporter of zinc minerals in the world (Ministry of Mining)

The metal

Gallium has no mine of its own.

No country on Earth mines gallium directly. Every commercial kilogram comes out as a byproduct: from refining bauxite into aluminum, or from smelting zinc. That is the rule that orders everything else. Whoever does not refine has no gallium. Even if their soil is full of it.

Tap to see where gallium ends up. The Pentagon needs it. Every chipmaker needs it.

How much it is worth: close to 300 dollars per kilo on the Chinese market and around 400 per export kilo (SMM, July 2026). Zinc trades near 3 dollars per kilo. The passenger is worth about a hundred times more than the vehicle.

The weapon

Gallium has already been used as a weapon.

The US critical minerals list exists for scenarios like this one. China concentrates the world's processing and turned it into commercial leverage.

The geopolitical value has a number. The USGS calculated in 2024 that a total Chinese ban on gallium and germanium would cost the US economy 3.4 billion dollars, with more than 40 percent of the loss concentrated in semiconductor manufacturing. On the 2022 critical minerals list, gallium carried the highest supply risk of every mineral analyzed.

And the market is tiny. Some 40 tonnes of gallium a year cover 80 percent of US demand. Whoever controls a few dozen tonnes squeezes a superpower. That is why gallium sits at the center of the MOU, the truce and this series.

Aug 2023
China imposes export licenses on gallium and germanium, in response to Washington's semiconductor restrictions.
Dec 2024
China bans exports of gallium, germanium and antimony to the United States.
Nov 2025
After the Trump-Xi meeting, China suspends the ban. The licenses stay in force. Sales to military users stay prohibited.
Nov 27, 2026
The suspension expires. Nobody guarantees what comes next.
–
days until the gallium truce between China and the United States expires

The territory

The zinc belt crosses Potosí, Oruro and Chuquisaca.

Bolivian sphalerite travels loaded. The country's zinc concentrates carry between 5 and 8 percent of the world's indium. Gallium and germanium travel in the same rock.

The same Nor Lípez communities that learned about the lithium contracts through social media live on top of San Cristóbal's zinc.

Loading map of Bolivia…

Reference locations · Tap a marker

Zinc mine Refinery under construction Historic smelter

The problem

We export a sealed envelope.

The chain has four steps. Bolivia occupies the first two. The value sits in the last two.

01 · Bolivia
Mine
Potosí, Oruro, Chuquisaca. The rock comes out with zinc, silver, lead, indium, gallium, germanium.
02 · Bolivia
Concentrate
It gets milled, floated, bagged. Bolivia gets paid for this step. Only this step.
03 · Abroad
Smelter
Smelters abroad process the concentrate. That is where zinc gets separated from its passengers.
04 · Abroad
The metals
Zinc metal, indium, gallium, germanium, cadmium, silver. Collected by whoever refines.

Gallium, indium and germanium leave Bolivia without appearing on the invoice.

The State itself admits it. Then Mining Minister Marcelino Quispe said it in 2024: Bolivia gets paid only for the concentrate, and with its own refinery the country could process and sell the indium, cadmium, silver and copper that today travel inside.

Fundación Jubileo put a number on that loss. Zinc concentrate sales contracts recognize only zinc and silver as payable elements, with discounts even on those two. Indium, gallium, sulfur, tin and tungsten are left out. On indium, gallium and sulfur alone, the state-owned Colquiri mine forgoes 25.4 million dollars a year. Adding COMIBOL's shared-risk mines, the figure tops 86 million. Gallium sits inside that number, blended in, without a figure of its own.

The process

How gallium is extracted.

Seven steps separate the rock from the metal. Bolivia today reaches the second. Tap each step.

The refinery

The refinery that comes from China.

The plant that could open the envelope is being built in Oruro. Its spec sheet says a lot, even in what it leaves out.

Investment
350 million dollars
Financing
Concessional credit from China's Eximbank, 2 percent interest, 20-year term
Builder
Chinese consortium Enfi-Crig, supervised by Chong Qing Cisdi Engineering
Location
Grounds of the Vinto Metallurgical Company, Oruro. A second plant is planned for Potosí
Capacity
150,000 tonnes of concentrate a year to produce 65,000 tonnes of zinc metal, plus byproducts
Announced byproducts
Indium, cadmium, sulfur, silver, copper. Gallium does not appear in the public specifications

The question stands: will the refinery recover gallium, or will the most expensive passenger keep riding for free? The Ministry of Mining owes a technical, public answer.

Oruro already knows the other half of the story. Karachipampa was built in the eighties and spent decades barely operating. Iron without know-how rusts. The refinery that works is the one that comes with its own metallurgists, its own laboratories and contracts that force the teaching.

The ladder

How hard is it to open the envelope?

The honest answer is a ladder with four rungs. Each one has a price, a timeline and an owner of the knowledge. Nobody jumps from concentrate to chip. You climb rung by rung.

Rung 01

The file

Dust it off before you build something new. COMIBOL already ran this test: hydrometallurgical trials from 2013, concluded successfully in 2017, recovering gallium alongside zinc, silver, lead, tin and indium from the same concentrate. The industrial project sits shelved at COMIBOL's board. Indium has its own figure: close to 140 million dollars a year, calculated by UMSA. Gallium never had one of its own. It always traveled blended with indium and sulfur in the loss calculations, never alone.

Already tested in 2013–2017 · Missing decision, not technology
Rung 02

The zinc refinery

The one already under construction in Oruro. Roast, leach and electrowin technology the world has mastered for a century. Without this rung the next one does not exist: gallium only appears in a refinery's residues and solutions. The real challenge is running it well for decades. Karachipampa teaches what happens otherwise.

350 million dollars · 36 months · Under construction
Rung 03

The minor metals circuit

A side plant that treats the refinery's residues with solvent extraction and ion exchange, and pulls out indium, germanium and crude gallium. The technology exists, is licensed and runs today in Canada, Japan and Korea. The exact comparable: the United States plans that same circuit at its only primary zinc smelter, in Clarksville, Tennessee, for some 150 million dollars, to produce around 40 tonnes of gallium a year covering 80 percent of its demand.

100 to 150 million · 2 to 4 years after the refinery starts
Rung 04

Semiconductor grade

From crude gallium to the seven-nines gallium that enters a chip lies another industry: clean rooms, crystal growth, fine metallurgy accumulated over decades. In December 2025 South Korea's Korea Zinc announced the purchase of Nyrstar and a new 6.6 billion dollar smelter in Tennessee producing 13 metals, gallium included, plus semiconductor-grade sulfuric acid. That is the top of the ladder: what a country does after half a century of accumulated know-how.

Billions · Decades · The ceiling

The first rung waits for no one. It can be climbed this year, without depending on Washington or Beijing: by reopening a file that is already complete. Bolivian indium is confirmed, with a figure of its own. Gallium, to this day, never had one. Separating it out and publishing it is the proof the claim is missing.

The knowledge

Whoever refines, collects. Whoever knows, decides.

The triangle

The United States signed a critical minerals MOU with Bolivia on April 27. Gallium is on that list. The text remains unpublished. If the agreement includes technology transfer, nobody has seen it.

China processes 98 percent of the world's gallium, finances and builds the Oruro refinery, and has already used gallium as commercial leverage against Washington. The truce expires on November 27. Bolivia sits in the middle.

Russia signed for the lithium with confidentiality clauses and no prior consultation. The precedent exists and stands.

The ore runs out. Knowledge accumulates.

What Bolivia needs to be

Bolivia needs to be the one that knows. Bolivian metallurgists trained inside the plant, under contract, and never just visiting. Laboratories in Oruro and Potosí. Technology transfer clauses that are public, measurable and auditable.

We keep demanding to see the MOU. Three stories, one same demand. The full text, public. The series continues until it appears.

The rule is the same for everyone. The refinery contract, public. The MOU text, public. The same standard for Washington, for Beijing, for Moscow.

Gallium can be learned. Lithium can wait. Democracy cannot.

Sources

USGS Critical Minerals List 2025 (Federal Register, November 2025) · USGS, Quantifying Potential Effects of China's Gallium and Germanium Export Restrictions (OFR 2024-1057, November 2024) · Fundación Jubileo, Minería: un sector estratégico frente a nuevos desafíos, Serie Debate Público Nº 87 (2021) · Mining Press, Indio: el elemento olvidado, citing Justo Zapata (UMSA) · Bolivia Energía Libre on COMIBOL's pilot tests and the Metalox project · América Economía and Bolivia Energía Libre on the gallium resource at Mallku Khota · Bolivia's Ministry of Mining and Metallurgy (2023, 2024) · Vinto Metallurgical Company (2023) · SMM gallium quotations (July 2026) · Reuters and Fastmarkets on the Chinese suspension (November 2025) · Nyrstar and Clarksville Now on the Tennessee project (2022 to 2025) · EFE (February 2023) on the San Cristóbal sale · Los Tiempos (2021) on the Bolívar and Porco sale · sala.red, Bolivia's critical minerals, Parts 1 and 2.

Price figures reflect the cited market references and change daily. Refinery capacities come from the project's public specifications and may shift during construction. Map locations are approximate.

The series

Part 1: the map of the 60 minerals. Part 2: the MOU nobody can read. Part 3: the hidden passengers of zinc. Transparency about what gets signed in our name is a collective responsibility.

Open data · Free use with attribution
Cochabamba · Bolivia · 2026