The city of Atlanta, Georgia, in Fulton County, was an important rail and commercial center during the American Civil War. Although relatively small in population, the city became a critical point of contention during the Atlanta Campaign in 1864 when a powerful Union army approached from Union-held Tennessee.
Rare-earth compounds containing lanthanum are extensively used in carbon lighting applications, especially by the motion picture industry for studio lighting and projection.
Facts about the Discovery and History of the Lanthanum Element Lanthanum was discovered by Carl G. Mosander in 1839. Occurrence of the Lanthanum Element Obtained chiefly from monazite and bastnaesite. Abundances of the element in different environments % in Universe 2Ã10-7 %