Orlando Silva and other leaders of the Rede Sustentabilidade party filed a petition with the Brazilian Supreme Court (STF) on Friday to stop the $2.8 billion sale of the Serra Verde mining group. The operation, located in Minaçu in the state of Goiás, is the only facility outside of Asia producing rare earth elements on a commercial scale. The party argues that the sale to USA Rare Earth Inc constitutes a threat to national security and a violation of the constitutional mandate to protect strategic resources.

This move by the Brazilian left is a rare moment of resistance against 'Mineral Imperialism.' The sale was facilitated by the National Mining Agency (ANM) and involves a $565 million loan from the U.S. government’s Development Finance Corporation (DFC) as part of 'Project Vault'—a $12 billion American initiative to hoard critical minerals. By integrating the Serra Verde mine into a US-controlled supply chain, Brazil risks losing sovereign control over the materials essential for the global energy transition.

"Brazilian legislation doesn’t provide sufficient safeguards for the national interest," the party argued in its court filing. The transaction would effectively turn the Goiás Highlands into a private extraction zone for Western tech conglomerates, bypassing national development goals in favor of American stockpiles. While the Serra Verde press office declined to comment, the stakes are clear: the Global South is being pressured to liquidate its physical wealth to underwrite the 'Green' transitions of the Global North.

This dispute occurs as China similarly tightens its grip on the sector. On April 29, Beijing’s Ministry of Industry and Information Technology (MIIT) published new rules that allow for the revocation of business licenses for rare earth producers who exceed state quotas by more than 30 percent. Between the American attempt at corporate enclosure and the Chinese model of state command, nations like Brazil are finding their sovereign territory turned into a battlefield for the physical inputs of the future.