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"Arkansas May Have Vast Lithium Reserves, Researchers Say"

"Federal and state researchers said there might be five million to 19 million tons of lithium, more than enough to meet the world’s demand for the battery ingredient."

"Researchers at the United States Geological Survey and the Arkansas government announced on Monday that they had found a trove of lithium, a critical raw material for electric vehicle batteries, in an underground brine reservoir in Arkansas.

With the help of water testing and machine learning, the researchers determined that there might be five million to 19 million tons of lithium — more than enough to meet all of the world’s demand for the metal — in a geological area known as the Smackover Formation. Several companies, including Exxon Mobil, are developing projects in Arkansas to produce lithium, which is dissolved in underground brine.

Whether lithium harvesting takes hold in the region will depend on the ability of those companies to scale up new methods of extracting the valuable battery ingredient from salty water. The processing technique that Exxon and others are pursuing in Arkansas, known as direct lithium extraction, generally costs more than more conventional methods do, according to the consulting firm Wood Mackenzie."

Ivan Penn and Rebecca F. Elliott report for the New York Times October 21, 2024.

Source: NYTimes, 10/22/2024