RARE EARTH ELEMENTS
# ID SY Name $Pound Usage
1 58 Ce Cerium 3 polishing agent in glass manufacturing, acting as a decolorizer, and is also a key component in "flint" for cigarette lighters
2 66 Dy Dysprosium 677 alloying element in the production of powerful neodymium-based permanent magnets
3 68 Er Erbium 58 production of optical fibers for telecommunications
4 63 EU Europium 69 nuclear reactors, light bulbs, and medical imaging
5 64 Gd Gadolinium 63 MRI scans to help detect abnormal tissue and other conditions
6 67 Ho Holmium 126 powerful magnetic fields in devices like MRI machines, and as a component in nuclear reactor control rods due to its ability to absorb neutrons
7 57 La Lanthanum 11 used in medicine to treat high phosphate levels in the blood
8 71 Lu Lutetium 1,418 cancer treatment, petroleum refining, and dating meteorites
9 60 Nd Neodymium 2 Magnets, Electronics, Glass, Lasers, Cryocooler applications, Safety glasses, Medical imaging, Magnotherapy
10 61 Pm Promethium 1,014,126 pacemakers, guided missiles, radios
11 59 Pr Praseodymium 2 alloying agent to create high-strength metals for aircraft engines
12 21 Sc Scandium 579 aerospace, lighting, sports equipment
13 62 Sm Samarium 31 powerful, high-temperature resistant "samarium-cobalt" magnets
14 65 Tb Terbium 1,451 green phosphor in fluorescent lamps, television screens, and computer monitors
15 69 Tm Thulium 6,614 as a green phosphor in fluorescent lamps, television screens, and computer monitors
16 39 Y Yttrium 35 LED lights, lasers, microwave filters, high-temperature superconductors, and certain medical applications
17 70 Yb Ytterbium 68 Laser systems, atomic clocks, and as an additive to improve the strength of certain steels
T O T A L 1,025,332  

Reference