PEMEX Finds Lithium in New Wells; Output Years Away

PEMEX has confirmed lithium traces in oil wells across the Burgos and Tampico-Misantla basins in northeastern Mexico, but specialists estimate commercial production remains 10 to 12 years away, contingent on hydraulic fracturing operations and infrastructure that does not yet exist. The findings add a new dimension to Mexico's state-controlled lithium strategy,  governed by LitioMx under a Supreme Court-validated 2022 Mining Law reform,  but the agency's 2026 budget of MX$13.9 million (US$805,000) covers only operational costs, leaving exploration capacity far below the investment levels required to compete globally. With China, Australia and Chile supplying roughly 94% of the world's battery-grade lithium and sodium battery alternatives advancing rapidly, Mexico's mining, energy and automotive supply chain sectors face compressing timelines to convert geological potential into strategic output.

PEMEX has confirmed the presence of lithium traces in oil wells in the Burgos Basin in northeastern Mexico, identifying the mineral in sites across Tamaulipas, Veracruz and Tabasco through laboratory analysis, but specialists warn the findings do not constitute quantified reserves and that any path to commercial production could take more than a decade.

Studies are underway to select extraction sites across two basins in northeastern Mexico: Burgos and Tampico-Misantla. The state oil company said lithium accumulations were confirmed in onshore areas covering Tamaulipas, Veracruz and Tabasco following laboratory testing.

Specialists cautioned against overstating the significance of the findings. Energy sector specialist Ramsés Pech told Milenio Televisión that the Burgos Basin is intrinsically tied to hydraulic fracturing, and that lithium, embedded in volcanic rock at depths of between 2,000m and 2,500m, would only be viable as a byproduct of hydrocarbon extraction.

"We are not looking at immediate production. First, fracking must be carried out for oil, and then the return water carrying lithium traces must be managed," Pech said. He estimated consolidation could take between 10 and 12 years and noted that determining actual reserve volumes remains premature given the limited drilling in fracture zones across Mexico.

Paul Sánchez, Energy Sector Analyst and Visiting Professor, University of California San Diego, drew a sharper distinction. "We are not talking about quantified reserves, nor approximate resources; we are talking about a potential that requires research, technology and massive investments," he said. 

Sánchez warned against comparing the Burgos Basin findings to the Sonora deposit, citing the technical complexity of separating lithium from petroleum brines. "From 1t of brine, you get just a few grams of lithium. It is a process that requires time and infrastructure that we do not yet have."

Beyond Burgos, PEMEX is exploring lithium extraction from oilfield brines as part of its 2025–2030 Strategic Plan. Former CEO Victor Rodríguez disclosed that lithium concentrations comparable to those found in Bolivia have been identified at drilling sites across five states. PEMEX is evaluating direct lithium extraction technologies and may establish a subsidiary, PEMEX Lithium, to produce what it calls "petrolithium" from petroleum brines, a move that could enable collaboration with state agency LitioMx.

Mexico holds roughly 1.7Mt of lithium across 82 identified deposits in 18 states, with Sonora leading at 13 deposits, followed by Puebla with 12 and Oaxaca with nine.

LitioMx: Legal Footing, Budget Constraints

The legal framework governing state lithium control received a boost when Mexico's Supreme Court validated the 2022 Mining Law reform, dismissing five constitutional arguments filed by a minority of legislators. The court upheld Art. 1, 5bis and 10 of the Mining Law, which reserve to the state the exploration, exploitation, processing and use of lithium, prohibit private concessions, and establish lithium deposit zones as mining reserve areas. Justices also ruled that prior indigenous consultation was not required because the reform did not generate a direct and differentiated impact on the rights of indigenous and Afro-Mexican communities.

Despite the legal validation, LitioMx's 2026 federal budget allocation stands at MX$13.9 million (US$805,000), a 7.7% increase from MX$12.9 million in 2025, which itself followed a 27.3% rise over 2024's MX$9.8 million. For the third consecutive year, the budget covers only operational costs. Rubén del Pozo, President, AIMMGM, questioned whether a state-run entity could sustain exploration processes that typically demand multi-million-dollar investments. "Lithium is not something you can simply extract and sell for profit," Del Pozo said. "First, you need to know where it is, how much of it exists, and in what condition. That requires time, investment, and technology."

President Claudia Sheinbaum acknowledged the technical complexity, noting that Mexico's lithium is primarily found in clay form. "The challenge lies in evaluating the cost of processing lithium from clay, essentially a mud-like substance mixed with lithium, which is much more difficult than extracting it from sandy deposits," she said.

A Closing Window

The pace of Mexico's development sits against accelerating global demand. S&P Global Energy CERA projects the lithium carbonate surplus will fall to 109,000t in 2026, down from 141,000t in 2025, as global consumption rises 13.5% to 1.48Mt of lithium carbonate equivalent and production increases 9.9% to 1.58Mt. China, Australia and Chile, alongside Argentina and Bolivia, currently supply roughly 94% of the world's lithium used in batteries, electric vehicles and renewable energy.

Sánchez warned that the global market is already advancing toward sodium batteries,  driven primarily by China, and that the window of opportunity for lithium as a critical transition mineral could close before Mexico commercializes its first ton from oil wells. "If we take too long, we will have lost the race," he said.

Armando Alatorre, Vice President, CIMMGM, framed the competitive stakes bluntly: "While Mexico debates state control of lithium, the global automotive industry is already securing supply contracts elsewhere, leaving the country out of the investment race for batteries and electric vehicles."