Page "Neodymium" Paragraph 40
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Wikipedia
Neodymium is never found in nature as the free element, but rather it occurs in ores such as monazite and bastnäsite that contain small amounts of all the rare earth metals.
Its abundance in the Earth crust is about 38 mg / kg, which is the second highest among rare-earth elements, following cerium.
The bulk of current production is from China, whose government has recently imposed strategic materials controls on the element, raising some concerns in consuming countries.
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