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by allan_ 3536 days ago
Where did you find these numbers? There are 14,000,000 tonnes of mineable Li on earth (http://minerals.usgs.gov/minerals/pubs/commodity/lithium/).
1 comments

This is misleading.

There are 14,000,000 tonnes of identified reserves. There may be more, we just haven't identified them yet.

Estimates for the Earth's crustal content range between 20 ppm and 70 ppm. Using 20 ppm and the mass of the Earth's crust being more than 2 * 10^19 tonnes, it would be (20/10^6) * (2*10^19) = 400,000,000,000,000 tonnes of Li.

So although we'll only ever be able to mine a small fraction of that, I still think it's safe to assume that we are not capped at 14 million tonnes.