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  2. Fluorite - Wikipedia

    en.wikipedia.org/wiki/Fluorite

    Pure fluorite is colourless and transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels.

  3. Biological aspects of fluorine - Wikipedia

    en.wikipedia.org/wiki/Biological_aspects_of_fluorine

    It is used as a defense against herbivores by at least 40 green plants in Australia, Brazil, and Africa; [43] other biologically synthesized organofluorines include ω-fluoro fatty acids, fluoroacetone, and 2-fluorocitrate. [50] In bacteria, the enzyme adenosyl-fluoride synthase, which makes the carbon–fluorine bond, has been isolated. The ...

  4. Fluoride - Wikipedia

    en.wikipedia.org/wiki/Fluoride

    The main uses of fluoride, in terms of volume, are in the production of cryolite, Na 3 AlF 6. It is used in aluminium smelting. Formerly, it was mined, but now it is derived from hydrogen fluoride. Fluorite is used on a large scale to separate slag in steel-making. Mined fluorite (CaF 2) is a commodity chemical used in steel-making.

  5. Halide mineral - Wikipedia

    en.wikipedia.org/wiki/Halide_mineral

    Two commercially important halide minerals are halite and fluorite. The former is a major source of sodium chloride, in parallel with sodium chloride extracted from sea water or brine wells. Fluorite is a major source of hydrogen fluoride , complementing the supply obtained as a byproduct of the production of fertilizer.

  6. Fluorine - Wikipedia

    en.wikipedia.org/wiki/Fluorine

    Natural organofluorines have been found in microorganisms, plants [68] and, recently, animals. [253] The most common is fluoroacetate, which is used as a defense against herbivores by at least 40 plants in Africa, Australia and Brazil. [214] Other examples include terminally fluorinated fatty acids, fluoroacetone, and 2-fluorocitrate. [254]

  7. Fluorescence - Wikipedia

    en.wikipedia.org/wiki/Fluorescence

    Divalent europium is the source of the blue fluorescence, when seen in the mineral fluorite. Trivalent lanthanides such as terbium and dysprosium are the principal activators of the creamy yellow fluorescence exhibited by the yttrofluorite variety of the mineral fluorite, and contribute to the orange fluorescence of zircon.

  8. Biomineralization - Wikipedia

    en.wikipedia.org/wiki/Biomineralization

    Fossil skeletal parts from extinct belemnite cephalopods of the Jurassic – these contain mineralized calcite and aragonite.. Biomineralization, also written biomineralisation, is the process by which living organisms produce minerals, [a] often resulting in hardened or stiffened mineralized tissues.

  9. Origin and occurrence of fluorine - Wikipedia

    en.wikipedia.org/wiki/Origin_and_occurrence_of...

    Fluorite (CaF 2), also called fluorspar, is the main source of commercial fluorine. Fluorite is a colorful mineral associated with hydrothermal deposits. It is common and found worldwide. China supplies more than half of the world's demand and Mexico is the second-largest producer in the world. [citation needed]

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