Explained: US-China Rare Earth Export Curbs and Why Indium Matters for India

Basic Meaning: Rare earth elements are a group of 17 metallic elements. They include 15 lanthanides along with scandium and yttrium. They are called “rare earths” not because all of them are extremely rare in the Earth’s crust, but because they are usually found in low concentrations and are difficult to separate economically.

Important Examples: Important rare earth elements include neodymium, praseodymium, dysprosium, terbium, yttrium and scandium. Neodymium and praseodymium are important for high-performance permanent magnets, while dysprosium and terbium improve magnet performance at high temperatures.

UPSC Relevance: Rare earths are important for UPSC Prelims because they are frequently linked with minerals, science and technology, clean energy and defence applications. They are important for UPSC Mains because they connect with economic security, energy transition, strategic autonomy and global supply-chain politics.

Role in Modern Technology: Rare earth elements are used in electric vehicles, wind turbines, smartphones, fibre optics, satellites, radars, missiles, fighter aircraft, precision-guided weapons, medical devices and advanced electronics.

Role in Clean Energy: Permanent magnets made from rare earths are used in wind turbines and electric vehicle motors. As the world shifts towards renewable energy and electric mobility, demand for these minerals is expected to remain strategically important.

Role in Defence: Many defence platforms depend on rare earth-based components. These include missile guidance systems, radars, aircraft engines, communication systems and advanced sensors. This makes rare earth supply not only an economic issue but also a national security issue.

Supply Chain Risk: The main risk is not only mining. The bigger challenge is refining, separation and magnet manufacturing. A country may have mineral deposits, but without processing capacity it may still remain dependent on foreign supply chains.

Mining and Refining Dominance: China is a major producer of rare earths, but its dominance is even stronger in refining and processing. The International Energy Agency has stated that China accounted for 60% of global mined production of magnet rare earths and 91% of global refined output in 2024.

Processing Advantage: Rare earth ores must be separated into individual elements before they can be used in industry. This process is complex, expensive and environmentally sensitive. China has built large-scale processing, refining, alloy-making and magnet manufacturing capacity over several decades.

Downstream Control: China’s advantage is not limited to raw minerals. It also controls large parts of the downstream supply chain, including permanent magnets and specialised components used in electronics, defence and clean energy industries.

Strategic Leverage: Because many countries depend on China for refined rare earths and magnets, export controls give China bargaining power in global trade and strategic negotiations.

Basic Meaning: Export controls are government restrictions on the export of certain goods, technologies or materials. They are usually applied to items that have national security, strategic, military or dual-use importance.

Dual-Use Meaning: A dual-use item is one that can be used for both civilian and military purposes. For example, rare earth magnets may be used in electric vehicles and wind turbines, but similar materials may also be used in missiles, radars and fighter aircraft.

China’s Export Controls: China’s export controls cover selected rare earth elements, compounds, magnets and technologies. These controls can require exporters to obtain licences and provide information on the end use of the materials.

Practical Effect: Even when exports are not completely banned, licensing requirements can delay shipments, increase costs and create uncertainty for companies in sectors such as automobiles, electronics, aerospace, defence and semiconductors.

Limited Relief: The US secured a statement that China would address concerns over shortages of some rare earths and critical minerals. This may help specific companies or sectors obtain supplies through licences or approved shipments.

No Full Rollback: The major point is that China’s overall export control system appears to remain in place. Therefore, the US has not achieved a complete removal of restrictions.

Case-by-Case Possibility: The development may lead to selective approvals for civilian or less sensitive uses. However, minerals linked with defence or advanced strategic technologies may continue to face strict scrutiny.

Continuing Strategic Competition: The issue shows that critical minerals have become part of wider US-China competition in trade, technology, defence and industrial policy.

Basic Meaning: Indium is a soft, silvery metal used in advanced electronics and semiconductor-related applications. It is not a rare earth element, but it is a critical mineral.

Use in Electronics: Indium is used in indium tin oxide, which is important for touchscreens, flat-panel displays and some solar cells.

Use in Semiconductors: Indium phosphide is important for high-speed electronic and photonic applications. It is used in optical communication, lasers, data transmission, photonic chips and advanced telecom systems.

Why the US Mentioned Indium: The reference to indium shows that the issue is not only about rare earth magnets. It is also about the broader technology supply chain, including semiconductors, optical networks, data centres and future communication technologies.

Rare Earth Elements: Rare earth elements are a specific group of 17 elements. Examples include neodymium, praseodymium, dysprosium, terbium, yttrium and scandium.

Critical Minerals: Critical minerals are minerals that are essential for economic development or national security and whose supply may be vulnerable due to import dependence, limited production, geopolitical risk or processing concentration.

Relationship Between Both: Rare earth elements are often treated as critical minerals, but all critical minerals are not rare earths. For example, lithium, cobalt, nickel, gallium, germanium and indium are critical minerals but not rare earth elements.

UPSC Trap: Students should not use “rare earths” and “critical minerals” as identical terms. Rare earth elements are one category within the wider critical minerals framework.

Industrial Importance: India needs critical minerals for electric vehicles, renewable energy, batteries, semiconductors, electronics manufacturing, telecom infrastructure, aerospace, defence production and advanced manufacturing.

Strategic Autonomy: If India depends excessively on one country for critical minerals, it may face supply disruption during geopolitical tensions. Therefore, critical mineral security is directly linked to strategic autonomy.

India’s Critical Minerals List: India released a list of 30 critical minerals in 2023. The list includes rare earth elements, indium, gallium, germanium, lithium, cobalt, nickel, graphite and several other minerals important for technology and energy sectors.

Link with Atmanirbhar Bharat: Critical mineral security supports Atmanirbhar Bharat, Make in India, semiconductor manufacturing, defence indigenisation, electric mobility and renewable energy goals.

Semiconductor Supply Chain: Semiconductors require highly specialised materials, gases, chemicals and metals. Indium, gallium, germanium and rare earths can be important in different parts of the advanced electronics and semiconductor ecosystem.

Electronics Manufacturing: India is trying to expand mobile manufacturing, electronics exports, chip packaging, semiconductor fabrication and component production. These sectors need predictable access to critical minerals.

Telecom and Data Centres: Indium-based and rare-earth-based technologies are relevant for optical communication, lasers, advanced networks and data centres. This connects the issue with Digital India and future 6G ambitions.

Defence Electronics: Modern defence systems use sensors, radars, communication systems, rare earth magnets and advanced electronic components. Mineral dependence can therefore become a defence supply-chain vulnerability.

Domestic Exploration: India should accelerate geological exploration of rare earths, lithium, cobalt, nickel, graphite, potash and other critical minerals.

Processing and Refining: Mining alone is not enough. India must develop separation, refining, alloy-making, magnet manufacturing and recycling capacity.

Overseas Partnerships: India should strengthen mineral partnerships with countries such as Australia, the US, Japan, EU members, African countries and Latin American resource-rich nations.

Recycling and Urban Mining: India should recover useful minerals from e-waste, used batteries, industrial waste and discarded electronics. This can reduce import dependence and support a circular economy.

Strategic Stockpiling: India may consider strategic reserves of selected high-risk minerals used in defence, telecom, semiconductors and clean energy sectors.

Research and Substitution: Indian research institutions should work on mineral substitutes, material efficiency, recycling technology and alternative manufacturing processes.

Policy Coordination: Critical mineral policy should be linked with India’s semiconductor policy, electric mobility plans, renewable energy targets, mining reforms, foreign policy and defence manufacturing strategy.