Rare Earth Elements, REE Facts, ProEdge Media Corp., InvestorIntel
Gadolinium, Light Rare Earth Elements, LREE, REE Facts, ProEdge Media Corp., InvestorIntel
REE Facts | HREE Facts | LREE Facts | Rare Metal Resource
LREE : 57 Lanthanum | 58 Cerium | 59 Praseodymium | 60 Neodymium | 61 Promethium | 62 Samarium | 63 Europium | 64 Gadolinium
HREE : 65 Terbium | 66 Dysprosium | 67 Holmium | 68 Erbium | 69 Thulium | 70 Ytterbium | 71 Lutetium | 39 Yttrium
Gadolinium, Light Rare Earth Elements, LREE, REE Facts, ProEdge Media Corp., InvestorIntel
The Light Rare Earth Element "Superhero" Gadolinium
Tracy Weslosky, Editor, InvestorIntel
Source: REE Handbook

Gadolinium, REE Collection, ProEdge Media Corp. Gadolinium is a light rare earth element (LREE) used in nuclear reactor control rods to regulate the fission process. In 1886 Lecoq de Boisbaudran separated gadolinium metal from the oxide. He named the silvery-white metallic metal that is both malleable and ductile after Finnish Chemist Johan Gadolin who discovered the first rare earth in 1794. Gadolinium is a versatile rare earth, so much so that it is referred to as the superhero of rare earths. Believe it or not, one Gadolinium molecule can bend water molecules. Gadolinium also has fluorescent properties and tarnishes quickly in moist air.

One of the most interesting facts about gadolinium is that at the molecular level, it exhibits a rare jumping motion in an electrical field. The significance of this remains unknown and leaves this rare earth element open for use in applications which have yet to be discovered. In addition, gadolinium metal exhibits magnetocaloric effect meaning that its temperature increases when placed in a magnetic field and decreases when removed from a magnetic field.

In the medical setting, gadolinium is used as a contrast agent and is injected into patients undergoing MRI scans to increase the scan's clarity and has been used to target tumors. When gadolinium is used in magnetic refrigeration, heating and cooling costs can potentially be reduced by 80%.

Large amounts of gadolinium are contained in minerals that are rich in LREE's. Gadolinium occurs in the Earth's crust at an average concentration of 5 parts per million and the primary source of gadolinium is the Bastnäsite deposits in China and the US. Bastnäsite is mined in the United States as a primary product from a hard-rock carbonatite. In China, bastnäsite and lesser amounts of associated monazite are also mined from a carbonatite. Gadolinium ore is recovered as a by-product of iron ore mining by hard-rock open pit methods. Gadolinium is also a component of LREE-mineral monazite deposits that can be found in Australia, Brazil, China, India, Malaysia, South Africa, Sri Lanka and Thailand. Gadolinium is mined from a variety of ore minerals and deposits using various methods. It has also been sourced from the LREE-mineral loparite recovered from a large alkali igneous intrusion in Russia (Hedrick, Sinha, and Kosynkin, 1997).

For more information on the light rare earth element gadolinium, go to www.REEHandbook.com, the ultimate guide to rare earth elements.

Gadolinium, Light Rare Earth Elements, LREE, REE Facts, ProEdge Media Corp., InvestorIntel
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