Argentina will join Pax Silica, the U.S.-led coalition launched in December 2025 to secure the supply chains behind artificial intelligence (AI), entering through the two links it can supply: critical minerals and energy.
The accession will be formalized at a two-day summit, on June 25 and 26, organized by the State Department and led by Jacob Helberg, the U.S. Under Secretary of State for Economic Affairs and the initiative's architect. Foreign Minister Pablo Quirno announced it on his X account.
The Argentine delegation is headed by Ambassador Alec Oxenford. Quirno framed the move as a continuation of the Framework Instrument for Securing Supply in the Mining and Processing of Critical Minerals, which Argentina and the United States signed in February, also in Washington.
According to the foreign minister, the initiative lets the country take part in joint efforts to land investments, build infrastructure and create incentives across every level of the global AI supply chain — a phrasing that sets a broad expectation against a role that, for now, is narrower.
What the signature actually mobilizes is a separate question from the signature itself, and that is where the coming week will be measured.
Where Argentina Fits: Raw Material and Energy
Pax Silica spans the entire AI chain. The architecture published by the State Department runs from critical minerals to energy, and from there to advanced manufacturing, semiconductors, AI infrastructure and logistics. The chip-fabrication core is supplied by South Korea, Japan, Taiwan and the Netherlands, the economies that concentrate the companies dominating that segment. Argentina enters through the first two links: raw material and energy.
It is a distinction Helberg himself had drawn. When he presented the initiative in December, he expressed reservations about Argentina's fit under the strictest definition — the one organized around semiconductor manufacturing — while leaving the door open to deeper collaboration on critical minerals.
Argentina's place landed on the resources side: lithium, copper, uranium and silver, the minerals the country can offer a bloc that needs to secure suppliers outside China. That is the underlying logic: the coalition concentrates manufacturing capacity but depends on outside producers for the raw material that manufacturing consumes.
The energy piece brings the initiative closer to the business Shale24 covers. Among the cooperation areas Pax Silica lists explicitly are power grids and generation, alongside data centers. It is the same ground on which Argentina is assembling its offer: gas from Vaca Muerta and renewables as backing for intensive demand, data centers as the destination, and Argentina LNG as a route to monetize the surplus.
The expanded RIGI the government is promoting — the so-called "Súper RIGI" — includes, among its covered sectors, data centers powered by Vaca Muerta gas. Accession to Pax Silica works as the geopolitical scaffolding on which that energy-for-AI bet seeks to rest.
From Framework to Financing: The Test Ahead
For the reader who follows investment, what matters is what the signature mobilizes. February's Framework Instrument committed the parties to identify priority projects and facilitate their financing within six months. That window closes now, in the same week as the summit. The concrete question is whether the accession translates into financial instruments applied to Argentine projects.
The tools exist and carry figures. The State Department announced a Pax Silica Fund of $250 million in assistance for critical-minerals extraction and processing, infrastructure and manufacturing assets. At February's ministerial, the United States counted more than $30 billion in letters of interest, loans and investments mobilized over six months alongside the private sector, and launched FORGE, which adds price-floor mechanisms for critical minerals. To that are added credits from the U.S. Export-Import Bank (EXIM Bank) and the U.S. International Development Finance Corporation (DFC).
On the Argentine side, the portfolio is assembled. The mining RIGI has accumulated 19 approved projects worth more than $32.2 billion, with the Vicuña copper project the first case in the strategic long-term export category (PEELP). Lithium keeps the country among the world's top five producers. What matters is whether the Washington summit returns financing commitments or supply contracts tied to those assets, or whether the accession adds as one more diplomatic gesture on an alignment already signed in February.
The signal begins to appear this week. If the delegation returns with identified projects, assigned financing or supply contracts, the accession will have had economic content. If it returns only with the photo opportunity, it will have been another station on the same road. Helberg has already instructed U.S. diplomats to make the summit workable by identifying infrastructure projects, so the bar has been set on the side of facts.