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Leucophane :: Leucophane (n.) A mineral of a greenish yellow color; it is a silicate of glucina, lime, and soda with fluorine. Called also leucophanite..

Epipolized :: Epipolized (a.) Changed to the epipolic condition, or that in which the phenomenon of fluorescence is presented; produced by fluorescence; as, epipolized light..

Fluorescence :: Fluorescence (n.) That property which some transparent bodies have of producing at their surface, or within their substance, light different in color from the mass of the material, as when green crystals of fluor spar afford blue reflections. It is due not to the difference in the color of a distinct surface layer, but to the power which the substance has of modifying the light incident upon it. The light emitted by fluorescent substances is in general of lower refrangibility than the incident l

Spar :: Spar (n.) An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in the case of the gangue minerals of a metalliferous vein..

Fluorine :: Fluorine (n.) A non-metallic, gaseous element, strongly acid or negative, or associated with chlorine, bromine, and iodine, in the halogen group of which it is the first member. It always occurs combined, is very active chemically, and possesses such an avidity for most elements, and silicon especially, that it can neither be prepared nor kept in glass vessels. If set free it immediately attacks the containing material, so that it was not isolated until 1886. It is a pungent, corrosive, colorles

Fluoboride :: Fluoboride (n.) See Borofluoride.

Blue-john :: Blue-john (n.) A name given to fluor spar in Derbyshire, where it is used for ornamental purposes..

Triploidite :: Triploidite (n.) A manganese phosphate near triplite, but containing hydroxyl instead of fluorine..

Sequoiene :: Sequoiene (n.) A hydrocarbon (C13H10) obtained in white fluorescent crystals, in the distillation products of the needles of the California big tree (Sequoia gigantea)..

Fluoranthene :: Fluoranthene (n.) A white crystalline hydrocarbon C/H/, of a complex structure, found as one ingrdient of the higher boiling portion of coal tar..

Borofluoride :: Borofluoride (n.) A double fluoride of boron and hydrogen, or some other positive element, or radical; -- called also fluoboride, and formerly fluoborate..

Hydrofluosilicic :: Hydrofluosilicic (a.) Pertaining to, or denoting, a compound consisting of a double fluoride of hydrogen and silicon; silicofluoric. See Silicofluoric..

Fluosilicic :: Fluosilicic (a.) Composed of, or derived from, silicon and fluorine..

Fluocerite :: Fluocerite (n.) A fluoride of cerium, occuring near Fahlun in Sweden. Tynosite, from Colorado, is probably the same mineral..

Fluor Albus :: Fluor albus () The whites; leucorrhaea.

Phthalein :: Phthalein (n.) One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthalein. Their alkaline solutions are fluorescent..

Fluosilicate :: Fluosilicate (n.) A double fluoride of silicon and some other (usually basic) element or radical, regarded as a salt of fluosilicic acid; -- called also silicofluoride..

Fluorated :: Fluorated (a.) Combined with fluorine; subjected to the action of fluoride.

Flux :: Flux (n.) Any substance or mixture used to promote the fusion of metals or minerals, as alkalies, borax, lime, fluorite..

Hydrofluate :: Hydrofluate (n.) A supposed compound of hydrofluoris acid and a base; a fluoride.

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