There are a number of other metals that might not technically be 'rare earth metals' but they fall into the same category. Very strategic and rarely found in mi

There are a number of other metals that might not technically be 'rare earth metals' but they fall into the same category. Very strategic and rarely found in mineable deposits. I'm thinking specifically of gallium and indium both of which are used in solar panels. Indium is also an important component in flat panel displays.