3 ms·
> And, "rare-earths" are not in fact rare. It's not a lie but is an unfortunate synonym. They are rare in the sense that they are rarified, spread thin everywh
by zardo 4y ago
> And, "rare-earths" are not in fact rare.
It's not a lie but is an unfortunate synonym. They are rare in the sense that they are rarified, spread thin everywhere not concentrated in ores.
- moloch-hai 4y agoThey are in ores, but are mixed with other lanthanides that they are expensive to separate from. Two of them, yttrium and scandium, are not lanthanides and are relatively easy to separate out. A new powerfully magnetic iron-nickel allotrope may eliminate much of the market for several of them.