Noun
Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.
Source: Webster's dictionaryDefect formation in fluorite dioxides Both CeO 2 and ThO 2 accommodate excess oxygen in their lattice by formaing peroxide molecules. Source: Internet
A total of 31 isotopes of astatine have been discovered, with atomic masses ranging from 193 to 223. Production Approximately six million metric tons of the fluorine mineral fluorite are produced each year. Source: Internet
Common examples of halides include halite (NaCl, table salt), sylvite (KCl), fluorite (CaF 2 ). Source: Internet
For example, if some material is scratched by apatite but not by fluorite, its hardness on the Mohs scale would fall between 4 and 5. American Federation of Mineralogical Societies. Source: Internet
Divalent europium (Eu 2+ ) in small amounts is the activator of the bright blue fluorescence of some samples of the mineral fluorite (CaF 2 ). Source: Internet
As most other actinide dioxides, it is a black solid with a cubic ( fluorite ) crystal structure. Source: Internet