Lithium: China Finds an Estimated 5 Million Tonne Deposit

That's a world-class discovery.
From Mining.com:

Estimated 5 million tonnes of lithium deposits found in southwest China

An estimated 5 million tonnes of lithium deposits have been found in China’s southwestern province of Yunnan, scientists said, potentially curbing the nation’s reliance on imports of the material, used in electric vehicle batteries.

The Institute of Geochemistry, under the Chinese Academy of Sciences, said in a statement on its website on Monday that it had made the discovery. State media such as the China Daily newspaper reported the find on Wednesday.

Demand for lithium is growing rapidly as some consumers shift away from cars powered by fossil fuels.

The institute estimated that roughly 340,000 tonnes of lithium oxide were deposited in a test site of 7.2 square km, indicating the amount of lithium oxide in the entire area could exceed 5 million tonnes....MORE

Here's the U.S. Geological Survey, February 2019, on worldwide reserve estimates with a small caveat. The numbers for Argentina and especially Bolivia seem to be on the low side:

...Owing to continuing exploration, lithium resources have increased substantially worldwide and total about 62 million tons. Identified lithium resources in the United States—from continental brines, geothermal brines, hectorite, oilfield brines, and pegmatites—are 6.8 million tons. Identified lithium resources in other countries have been revised to 55 million tons. Identified lithium resources in Argentina are 14.8 million tons; Bolivia, 9 million tons; Chile, 8.5 million tons; Australia, 7.7 million tons; China, 4.5 million tons; Canada, 2 million tons; Mexico, 1.7 million tons; Czechia, 1.3 million tons; Congo (Kinshasa), Russia, and Serbia, 1 million tons each; Zimbabwe, 540,000 tons; Mali and Spain, 400,000 tons each; Brazil and Germany, 180,000 tons each; Peru and Portugal, 130,000 tons each; Austria, 75,000 tons; Finland and Kazakhstan, 40,000 tons each; and Namibia, 9,000 tons....