Which chemical element has the symbol 'Ce'?
Loparite-(Ce) the Sami indigenous inhabitants of the Kola peninsula, and the cerium content. Loparite-(Ce) Loparite-(Ce) is a granular, brittle oxide mineral of the perovskite class. It is black to dark grey and may appear grey to white in reflected light on polished thin section with reddish brown internal reflections. It has the chemical formula of (Ce,Na,Ca)(Ti,Nb)O. Nioboloparite is a variation of Loparite-(Ce) containing niobium. Loparite occurs as a primary phase in nepheline syenite intrusios and pegmatites. It is also found replacing perovskite in carbonatites. Loparite was first described for an occurrence in the Khibiny and Lovozero massifs, Kola peninsula and northern
Chemical element or an electrophile; similarly "Nu" denotes a nucleophile. "L" is used to represent a general ligand in inorganic and organometallic chemistry. "M" is also often used in place of a general metal. At least two additional, two-letter generic chemical symbols are also in informal usage, "Ln" for any lanthanide element and "An" for any actinide element. "Rg" was formerly used for any rare gas element, but the group of rare gases has now been renamed noble gases and the symbol "Rg" has now been assigned to the element roentgenium. Isotopes are distinguished by the atomic mass number (total protons and