Fluorite

//ˈflʊɚˌaɪt// noun

Definitions

Noun
  1. 1
    A widely occurring mineral comprising calcium fluoride plus or minus impurities, of various colours, used as a flux in steelmaking, and in the manufacture of glass, enamels and hydrofluoric acid. countable, uncountable

    "Near-synonym: calcium fluoride"

  2. 2
    a soft mineral (calcium fluoride) that is fluorescent in ultraviolet light; chief source of fluorine wordnet

Etymology

From fluor + -ite.

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