But it's notable that the formation of iron-rich ore was a biological process that happened a long time ago. Also, the iron would have originally been leached v

But it's notable that the formation of iron-rich ore was a biological process that happened a long time ago. Also, the iron would have originally been leached via saltwater from iron exposed to the sea, which given iron is 5.6% of the crust, is a lot vs (way) less than 0.1% for lithium.