fluorite

Noun
  1. A soft mineral (calcium fluoride) that is fluorescent in ultraviolet light;
    Chief source of fluorine (synset 114699517)
    is a type of: mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
    substance holonym:
    • atomic number 20, ca, calcium - a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals
    • atomic number 9, f, fluorine - a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite
    same as: fluor, fluorspar

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