New lithium discoveries in both the US and China offered the prospect of reshaping the geopolitical race for the mineral which is key to the global green energy transition. One was found along the border between the American states of Nevada and Oregon, potentially holding as much as 40 million metric tons of lithium, while Chinese state media said the country had found reserves that upped its share of global lithium supplies from 6% to 16.5%, although details were scant.