They could be the superheroes of minerals: Neodymium has the world's mightiest magnetic powers, making it essential for missile guidance systems. Lanthanum enhances the clarity of glass, particularly for high-end camera lenses, such as those used for intelligence, surveillance, and reconnaissance, and phosphorescent europium warms the hues in LED lights and plasma displays, while its unique neutron-absorbing properties make it a crucial ingredient in the control rods used in nuclear reactors.
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