China’s Grip on Critical Minerals May Be Short-Lived, But at What Cost?

The United States’ dependence on China for critical minerals is a pressing concern, threatening to derail its technological and economic ambitions. China dominates the refining of 19 out of 20 strategic minerals, with an average market share of 70%. This vulnerability gives Beijing significant influence over American industry.

A potential solution lies in the Pacific Ocean. Polymetallic nodules (PMNs), mineral-rich rock formations that form on the abyssal plain, are being touted as a game-changer. These potato-sized balls contain economically valuable metals like nickel, cobalt, copper, and rare earth elements. American Ocean Minerals plans to extract PMNs from the Cook Islands Exclusive Economic Zone, claiming there’s enough supply to last hundreds of years.

The scale of this resource is staggering. The Cook Islands EEZ holds an estimated 6.7 billion metric tons of PMNs, including 20 million metric tons of cobalt – about 100 times the annual amount coming from the Democratic Republic of Congo. This could potentially reduce the U.S.’s reliance on Chinese minerals and alleviate pressure on its critical supply chains.

However, environmentalists and scientists warn that deep-sea mining poses significant risks to marine ecosystems. A report by the American Museum of Natural History estimated that a single deep-sea mining machine could decrease animal abundance by 37% in certain regions. This has led to a growing coalition of countries backing a moratorium on deep-sea mining, with some calling for an outright ban.

The benefits of extracting PMNs must be weighed against potential costs. Proponents argue that deep-sea mining may be less damaging than land mining, which contributes to habitat destruction and toxic contamination. However, this is still a high-risk venture. The Trump administration’s decision to pursue exploration and exploitation of deep-sea resources in 2025 was likely motivated by a desire to reduce the U.S.’s dependence on Chinese minerals.

As global demand for critical minerals continues to grow – with estimates suggesting nickel, cobalt, and rare earth element demand could more than double by 2040 – it’s unclear whether new sources like PMNs can keep pace. The lack of diversification in mineral supply chains will remain a key geopolitical tension unless new, independent sources are explored.

American Ocean Minerals’ investment in the Cook Islands EEZ is just one example of this trend. While CEO Tom Albanese sees potential for hundreds of years’ worth of endowment from PMNs, actual mining is still far off and faces regulatory hurdles before it can become a reality.

The possibility of extracting critical minerals from the ocean floor offers a glimmer of hope for reducing the U.S.’s reliance on Chinese minerals. However, this must be weighed against significant environmental risks associated with deep-sea mining. As global demand for critical minerals continues to grow, finding new sources will be essential to maintaining economic stability. But at what cost?