Скачать или смотреть What are Rare Earth Elements?

Rare earth elements are an important economic resource which help power many high tech gadgets such as magnets in the modern world. But, what exactly are they, and why are they considered so rare? This video will answer this question, and explain what they are in 99 seconds.

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Sources/Citations:
[1] U.S. Geological Survey
[2] Thomas, Nicole; Tobias P. Fischer Dr.; and Adrian J. Brearley Dr.. "Magma Mixing at OlDoinyo Lengai: A Mineralogical and Trace Element Analysis of the 2007-8 Eruption.." (2018). https://digitalrepository.unm.edu/eps...
[3] Anatoly N. Zaitsev, Jörg Keller, Mineralogical and chemical transformation of Oldoinyo Lengai natrocarbonatites, Tanzania, Lithos, Volume 91, Issues 1–4, 2006, Pages 191-207, ISSN 0024-4937, https://doi.org/10.1016/j.lithos.2006.... (https://www.sciencedirect.com/science...)