Hold on Mr Zhang - appears the Lepidico associated to L-max...

Hold on Mr Zhang - appears the Lepidico associated to L-max lithium and K-max potash and phosphate associated to ASX's -PWN @ LIT etc using sulphuric acid which generates heat equivalent to gas may also be able to be used to extract rare earths and without the toxic sludge waiste holding ponds like China has in Mongolia and LIT means Lepidico is working on extracting lithium from clay in Mexico Sonata right now so the next question would be do you have water and ground aquifer water will do
I could be wrong so please do your own research because I've been here myself
Merry Christmas and a happy and prosperous new year - DYOR - still early days to the process