Shares of Standard Lithium (SLI 14.23%) jumped on Thursday, finishing the day up 11.7%. The rise came as the S&P 500 (^GSPC 0.27%) gained 0.3% and the Nasdaq Composite (^IXIC 0.09%) was flat.Standard Lithium moved higher alongside much of the industry after MP Materials announced it had inked a major deal with the Department of Defense (DoD).This mining company has a new shareholderMP, which owns the sole operating rare earth mine in the US, announced this morning that the Pentagon is purchasing $400 millio ...