Not that I want to turn this thread into a ruby thread, but there is a wealth of detailed information in the MUS threads that you can sink your teeth into. Look into any of the threads started by wombat777.
Agree 100% with you on the nuggets. Lithium and cobalt are at least real, but there are going to be a lot of losers over the next few years and I can't see which will be the winner. Darts is a fun game, but probably not the best way to choose an investment.