Lithium might not quite have bottomed yet -per this article in watoday, Mineral Resource have seen prices drop again this quarter. They're blaming it on continuing oversupply, plus a decrease in subsidies for ev's in China.
https://www.watoday.com.au/business/companies/lithium-miner-slashes-ore-price-further-amid-plummeting-global-demand-20191213-p53jw5.html
