What the hell are rare earth elements?

39 Anon84 7 5/11/2025, 12:17:18 PM media.hubspot.com ↗

Comments (7)

thenthenthen · 18h ago
The EU defines ‘about’ 30 rare earth elements: https://single-market-economy.ec.europa.eu/sectors/raw-mater...

Sweden is gamifying local mining through Mineraljakten or Mineral Hunting: https://www.sgu.se/mineraljakten/

Not sure where this is going.

htrp · 10h ago
Why is hubspot running a media company ?
rpozarickij · 1h ago
This seems to be an HTML version of an email, which is being hosted by Hubspot (probably because the email was sent via them).
hkon · 20h ago
Am I the only one who wanted to see a list of names?

Anyway: cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, lanthanum

whycome · 20h ago
Yeah this was more an overview of the industry and how the USA and China diverged on control and production. A really good article. But yeah, a gap of actually listing the elements and a single image depiction doesn’t include full names (just periodic table abbreviations).

From ChatGPT:

Light Rare Earth Elements (LREEs)

  1. Lanthanum (La): camera lenses, hybrid vehicle batteries
  2. Cerium (Ce): glass polishing, catalytic converters
  3. Praseodymium (Pr): magnets, aircraft engines
  4. Neodymium (Nd): powerful magnets (hard drives, EV motors)
  5. Promethium (Pm): radioactive, used in nuclear batteries
Heavy Rare Earth Elements (HREEs)

  6. Samarium (Sm): magnets, nuclear reactors
  7. Europium (Eu): red/blue phosphors in screens
  8. Gadolinium (Gd): MRI contrast, neutron capture
  9. Terbium (Tb): green phosphors, solid-state devices
 10. Dysprosium (Dy): heat-resistant magnets
 11. Holmium (Ho): high-strength magnets
 12. Erbium (Er): fiber optics, lasers
 13. Thulium (Tm): portable X-ray machines
 14. Ytterbium (Yb): stainless steel, lasers
 15. Lutetium (Lu): cancer treatment, PET scans
Other Rare Earths.

16. Scandium (Sc): aerospace alloys, sports equipment. 17. Yttrium (Y): superconductors, LEDs, cancer therapy

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gilleain · 20h ago
throwaway422432 · 7h ago
This was quite interesting in how Molycorp naively handed it's near monopoly to China in the 1980s.

We've since seen this playbook repeated across multiple industries.

Lynas Rare Earths noted in it's last quarterly report that it has started it's HRE separation circuit and will begin producing Dysprosium this month (May 2025), followed by Terbium in June at it's Malaysian site.

Doesn't really help the US (which is why Lynas are building the Seadrift plant in Texas with DoD funding) as most of that will go to Japan. Lynas interestingly got into the rare earth business in the wake of China's ban on exporting to Japan, so their major customers are the likes of Sumitumo who put up the initial funds for the Malaysian plant.

Last I heard Lynas were asking for more USG funds due to issues with the planned waste water treatment which will blow out the project costs to get working. The actual draft environmental assessment document is an eye-opener as far as the minutia of requirements, despite this being a national security priority.

https://www.listcorp.com/asx/lyc/lynas-rare-earths-limited/n...

https://www.forbes.com.au/news/billionaires/the-800-million-...

https://www.businessdefense.gov/ibr/mceip/news/docs/Lynas-Se...