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> The most expensive rare earth element you can currently send to Mars is platinum Platinum is not a rare earth element. REE is a specific term which describes
by Tuna-Fish 12y ago
> The most expensive rare earth element you can currently send to Mars is platinum
Platinum is not a rare earth element. REE is a specific term which describes the lanthanides, scandium and yttrium. Platinum instead belongs to the imaginatively named platinum group.