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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. 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.

  4. Yttrium(III) fluoride - Wikipedia

    en.wikipedia.org/wiki/Yttrium(III)_fluoride

    The fluoride minerals containing essential yttrium include tveitite-(Y) (Y,Na) 6 Ca 6 Ca 6 F 42 and gagarinite-(Y) NaCaY(F,Cl) 6. Sometimes mineral fluorite contains admixtures of yttrium. [ 1 ] [ 2 ]

  5. List of minerals - Wikipedia

    en.wikipedia.org/wiki/List_of_minerals

    Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...

  6. Plants vs. Zombies (video game) - Wikipedia

    en.wikipedia.org/wiki/Plants_vs._Zombies_(video...

    Plants vs. Zombies is a 2009 tower defense video game developed and published by PopCap Games. First released for Windows and Mac OS X, the game has since been ported to consoles, handhelds, and mobile devices. The player takes the role of a homeowner amid a zombie apocalypse.

  7. Calcium fluoride - Wikipedia

    en.wikipedia.org/wiki/Calcium_fluoride

    Naturally occurring CaF 2 is the principal source of hydrogen fluoride, a commodity chemical used to produce a wide range of materials. Calcium fluoride in the fluorite state is of significant commercial importance as a fluoride source. [11] Hydrogen fluoride is liberated from the mineral by the action of concentrated sulfuric acid: [12]

  8. 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.

  9. 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 ...