I've read that rare Earth's are mined where there is manufacturing demand and that they are not restricted by supply considerations. This graph seems to support that?pic.twitter.com/qtcwMyWOlW
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As far as I know, rare earths aren’t rare. You just need to move a ton of dirt and cause a lot of environmental damage to process them, so reserve numbers probably not accurate
And you don't go around counting and looking for, what you can easily get from China cheaply...another reason why the reserves are bunk.
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