A rare earth element (REE) or rare earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.are earth elements became known to the world with the discovery of the black mineral Ytterbite (renamed to Gadolinite in 1800) by Lieutenant Carl Axel Arrhenius in 1787, at a quarry in the village of Ytterby, Sweden.
Boaz is a city in Etowah and Marshall Counties in the State of Alabama. It is part of the ' Gadsden, Alabama Metropolitan Statistical Area '. As of the 2010 census, the population of the city is 9,551.
Decatur is a city in Morgan and Limestone counties in the State of Alabama. The city, affectionately known as The River City, is located in Northern Alabama on the banks of Wheeler Lake, along the Tennessee River. It is the largest city and county seat of Morgan County. The population in 2010 census was 55,683.