Most countries have, for many decades, kept a record of their own critical minerals list.

For example, the U.S., drew up a list of “war minerals” during World War I, containing important minerals which could not be found and produced in abundance domestically. They included: tin, nickel, platinum, nitrates and potash.

Since then, as the economy has grown and innovated, critical mineral lists have expanded considerably. The Energy Act of 2020 defines a critical mineral as:

“A non-fuel mineral or mineral material essential to the economic or national security of the U.S., whose supply chains are vulnerable to disruption.”

- ENERGY ACT, 2020.

Currently there are 50 entries on this list and the U.S. Geological Survey (USGS) estimates that China is the leading producer for 30 of them. From USGS data, Visual Capitalist's Marcus Lu visualizes China’s share of U.S. imports for 10 critical minerals.

What Key Critical Minerals Does the U.S. Import From China?

The U.S. is 100% import-reliant for its supply of yttrium, with China responsible for 94% of U.S. imports of the metal from 2018 to 2021.

A soft silvery metal, yttrium is used as an additive for alloys, making microwave filters for radars, and as a catalyst in ethylene polymerization—a key process in making certain kinds of plastic.

China is a major supplier of the following listed critical minerals to the U.S.

Note: China’s share of U.S. critical minerals imports is based on average imports from 2018 to 2021.

Meanwhile, the U.S. also imports nearly three-quarters of its rare earth compounds and metals demand from China. Rare earth elements—so called since they are not found in easily-mined, concentrated clusters—are a collection of 15 elements on the periodic table, known as the lanthanide series.

ℹ️ Yttrium and scandium exhibit similar rare-earth properties, and are found in the same ore bodies. They are often grouped together with the lanthanide series.

Rare earths are used in smartphones, cameras, hard disks, and LEDs but also, crucially, in the clean energy and defense industries.

Does China’s Dominance of U.S. Critical Minerals Supply Matter?

The USGS estimates that China could potentially disrupt the global rare earth oxide supply by cutting off 40–50% production, impacting suppliers of advanced components used in U.S. defense systems.

A version of this sort of trade warfare is already playing out. Earlier this year, China implemented export controls on germanium and gallium. The U.S. relies on China for around 54% of its demand for both minerals, used for producing chips, solar panels, and fiber optics.

China’s controls were seen as a retaliation against the U.S. which has restricted the supply of chips, chip design software, and lithography machines to Chinese companies.