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.
Madison, Alabama. Madison is a city located primarily in Madison County, near the northern border of the State of Alabama. Madison extends west into neighboring Limestone County. The city is included in the Huntsville Metropolitan Area, the second-largest in the state, and is also included in the merged Huntsville-Decatur Combined Statistical Area. As of the 2010 census, the population of the city was 42,938. Madison is bordered by Huntsville on all sides.