How Mining in Mongolia Works: China, Rail and Royalty Risk

Ask most global investors where the world’s next big copper and coal exposure sits and few will say Mongolia. Yet mining accounted for about 92.7% of the country’s exports in 2025, according to the Mongolian National Chamber of Commerce and Industry, and just two commodities, coal and copper, made up roughly 82% of the total.

That concentration is the signal many investors miss. Mongolia is not a frontier curiosity with a scattering of prospects; it is a landlocked, resource-dependent economy whose fortunes ride on a very narrow set of products and one dominant buyer.

The picture is also shifting right now. Oyu Tolgoi’s underground mine is ramping up, and new rail links into China are under construction. Both change what you are actually buying when you take on Mongolian exposure.

Here is a working map of what the country produces, how it reaches market, who controls the deposits, and which risks reprice the opportunity. With that map, you can judge any single project against the jurisdiction’s real structure.

What does Mongolia actually mine, and where does it sit?

Start with the weight of the sector, because the numbers tell the story before the geology does:

• Exports: mining made up about 92.7% of exports in 2025 (MNCCI, 2026)
• GDP: about 27% of nominal GDP in 2024 (Japan Ministry of Finance, October 2025)
• Budget: about one-fifth of government revenue (World Bank, June 2025)

Total exports reached US$15.7 billion in 2025, and China took 89.4% of them, according to Invest Mongolia. Three commodities carried most of that load.

One caution on that copper volume. The official 2.2819 million tonne figure most likely describes concentrate, a partly processed product that contains copper alongside other material, rather than pure contained metal. Treat it as shipped tonnage, not refined output.

Now look at the map. The largest deposits sit in the southern Gobi, close to the Chinese border and far from any seaport. Geography does the rest: a producer next door to the world’s biggest buyer of coal and copper, with no easy route to anyone else, naturally ends up selling almost everything south.

Reading the 2025 shift in the export mix

Coal’s share of exports fell from 55% in 2024 to about 40% in the first half of 2025. Copper filled the gap as Oyu Tolgoi’s underground mine lifted output.

The striking detail is that coal volumes still hit a record, about 7.5% above 2024, according to the Asian Development Bank (ADB). Revenue fell anyway.

That points to a price effect, not a collapse in demand. For you, the lesson is that Mongolian exposure is effectively a leveraged position on Chinese coal and copper demand, and that lens applies to everything below.

Record coal output paired with falling revenue is a classic volume-versus-price squeeze, and it shows why you should read Mongolian export tonnage alongside realised prices rather than on its own.

Why China, landlocked logistics and rail dominate Mongolian mining

If you sell nearly everything to one neighbour and have no coastline, your volumes and prices tend to move together. When China slows, you lose on both at once. Four structural factors lock that in:

1. China is the natural market, taking 89.4% of exports in 2025.
2. The product mix is concentrated, with coal and copper at about 82% of exports.
3. Logistics impose a physical ceiling, through different rail gauges, limited border terminals, road congestion and trans-loading.
4. Geographic diversification is limited, because bulk coal or concentrate cannot easily be redirected when Chinese demand weakens.

The logistics point deserves unpacking. A gauge break is where two railways use different track widths, so trains cannot run straight through. Historically, coal moved by rail inside Mongolia, was transferred by road across the border, then loaded onto rail again in China. Trans-loading, the physical shifting of cargo between transport modes, added cost, time and truck queues at every step.

That is why one railway can matter to valuation. The Gashuunsukhait-Gantsmod cross-border line is designed to connect directly into China’s network and remove the break.

Government and industry sources forecast that these projects could lift coal-export capacity from roughly 83 million to 165 million tonnes a year. That figure has not been independently confirmed, and it depends on Chinese-side infrastructure, mine output and demand.

Structural versus cyclical: China dependence and landlocked transport are structural. The 2024-25 coal price and inventory shock was primarily cyclical.

Read rail progress accordingly. Better track improves margins and throughput, but it does not create a second customer, so treat it as a competitiveness story rather than a diversification one.

How do Mongolia’s ownership rules, royalties and governance work?

Begin with the baseline. The Mongolian state owns the country’s minerals and issues exploration and mining rights. Deposits classed as strategically important, meaning those the state considers significant to the national economy, carry special ownership rules.

Those rules tightened through the National Wealth Fund Law and related Minerals Law amendments, adopted on 19 April 2024 and effective from May 2024. Based on reporting from PwC and Mongolian legal advisers, the key provisions are:

• A person or affiliated group generally cannot own more than 34% of a company holding a licence over a strategically important deposit.
• State-owned entities and companies with a signed government investment agreement are treated differently under that cap.
• The state may be entitled to up to 50% where state-funded exploration was involved.
• In certain privately explored strategic deposits developed jointly with the state, the entitlement can reach up to 34%.
• State participation was extended to certain associated or secondary deposits.
• From January 2025, the state’s equity interest can be replaced by a special royalty, with Parliament setting the rate on a government proposal.

A royalty is a payment to the state based on production or revenue, rather than an ownership stake. For you as a shareholder, that difference matters: equity dilutes your claim on the project, while a royalty takes a cut of the cash flow.

Practical effect: The framework keeps strong state leverage over strategic deposits, while offering a possible royalty alternative to compulsory equity. The final burden depends on implementing decisions and project-specific deals.

The upshot is that ownership outcomes are negotiated deposit by deposit. The signed investment agreement behind a project will usually tell you more than the statute alone.

Mongolia’s pattern of renegotiating mining agreements means ownership outcomes are settled deposit by deposit, so the signed investment agreement often tells you more about your real exposure than the statute does.

One more distinction. No completed or active public offering of Erdenes Mongolia, the state mining holding group, was identified in the research. Keep that separate from possible offerings by Erdenes group companies, citizen-shareholder arrangements, and Erdenes Tavan Tolgoi’s coal contracts.

What the governance score does and does not tell you

The Natural Resource Governance Institute (NRGI) rates how well countries manage their resource sectors. In its 2021 Resource Governance Index, Mongolia’s mining sector scored 70/100, up six points from 2017. A current ranking could not be found, so the 2021 score is the usable benchmark.

That is a solid aggregate, but it is five years old. It also masks weaknesses NRGI kept flagging in state-owned enterprises, particularly Erdenes Mongol. Verify the latest position against NRGI publications and official Mongolian government sources before relying on it.

Where is the real risk, and what have foreign investors learned?

Mongolia’s discount is not geological. It comes from politics, structure and logistics, and each risk carries a credible counter-argument.

The International Monetary Fund’s 2025 Article IV review, as reported in secondary sources, frames the core worry as concentration and urges a revised Foreign Investment Law. The World Bank points to reliance on mining revenues. Note that both the IMF and State Department views are secondary-sourced and not independently confirmed.

Precedents: Oyu Tolgoi, Khan Resources and Erdenes Tavan Tolgoi

Oyu Tolgoi is the central case. It is reported as 66% Rio Tinto and 34% government owned, and years of disputes over costs and financing ended with Rio cancelling about US$2.4 billion of government debt in 2022. Underground development was completed in late 2025.

The payoff is now visible. Third-quarter 2026 output rose 27% year on year to about 114,000 tonnes of copper, roughly 450,000 tonnes annualised, and Rio guides to about 500,000 tonnes a year from 2028 to 2036. Yet Rio also agreed in June 2025 to pay US$138.75 million to settle a US class action over disclosure of underground problems.

Disputes can be resolved, in other words, but only after prolonged renegotiation.

Khan Resources shows the harsher edge: Mongolia cancelled its uranium licences in 2010, and the matter went to arbitration before settling. SouthGobi Resources is also reportedly linked to 2012 foreign-ownership controversy, though that account is unverified. Erdenes Tavan Tolgoi speeds infrastructure under state control, but leaves private investors exposed to state-directed sales and transport policy.

Use those lessons as a checklist. The strongest-positioned projects tend to have:

• a large, low-cost deposit
• a signed investment agreement
• direct or improving Chinese logistics
• international lender involvement
• clear water and community plans
• protection against unilateral changes to ownership, royalties and licensing

If a project lacks the agreement, the logistics or the water plan, the discount you apply deserves to be larger.

Readers interested in the social licence risk can use our full explainer on the Oyu Tolgoi protests, which shows how road disruptions affect copper supply.

Weighing Mongolia’s geology against its structural discount

You now have both sides of the ledger. World-class deposits and a credible long-term copper story sit alongside China concentration, landlocked logistics, regulatory renegotiation and governance concerns.

Four variables will tell you which side is winning:

• completion of the Gashuunsukhait-Gantsmod railway, scheduled for 2027
• Oyu Tolgoi’s progress toward its 500,000-tonne guidance
• the special royalty rate and its implementing decisions
• Chinese demand for coal and copper

Your decision rests less on the country than on the contract. Check each project’s agreement, logistics and water position, and verify details against NRGI publications and official Mongolian government sources first.

Production guidance and infrastructure timelines are forward-looking and subject to change. Past performance does not guarantee future results.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions.