Looks like existing worldwide reserves are 26M tons [0], so this is a big find. [0] https://pubs.usgs.gov/periodicals/mcs2023/mcs2023-lithium.pd...
I think that true global reserves are much higher than what we know now. Before, Lithium was important, but not nearly in the quantities needed for EV's. Now that EV's have picked up, more people will be looking for Lithium, and that will make all the difference.
We just weren't looking very hard to find lithium compared to lead till very recently.
https://en.wikipedia.org/wiki/Abundance_of_elements_in_Earth...