https://www.bbc.com/future/article/20221110-how-australia-became-the-worlds-greatest-lithium-supplier
Maybe not anymore
Colossal Cache of Lithium Found in US May Be World's Largest
https://futurism.com/the-byte/lithium-found-us-worlds-largest-cache
QuoteA new study, published in the journal Science Advances, estimates that the McDermitt Caldera, a volcanic crater on the Nevada-Oregon border, harbors a colossal 20 to 40 million metric tons of lithium.