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Silicated :: Silicated (a.) Combined or impregnated with silicon or silica; as, silicated hydrogen; silicated rocks..

Feldspath :: Feldspath (n.) A name given to a group of minerals, closely related in crystalline form, and all silicates of alumina with either potash, soda, lime, or, in one case, baryta. They occur in crystals and crystalline masses, vitreous in luster, and breaking rather easily in two directions at right angles to each other, or nearly so. The colors are usually white or nearly white, flesh-red, bluish, or greenish..

Hauynite :: Hauynite (n.) A blue isometric mineral, characteristic of some volcani/ rocks. It is a silicate of alumina, lime, and soda, with sulphate of lime..

Humite :: Humite (n.) A mineral of a transparent vitreous brown color, found in the ejected masses of Vesuvius. It is a silicate of iron and magnesia, containing fluorine..

Pyrosmalite :: Pyrosmalite (n.) A mineral, usually of a pale brown or of a gray or grayish green color, consisting chiefly of the hydrous silicate of iron and manganese; -- so called from the odor given off before the blowpipe..

Staurolitic :: Staurolite (n.) A mineral of a brown to black color occurring in prismatic crystals, often twinned so as to form groups resembling a cross. It is a silicate of aluminia and iron, and is generally found imbedded in mica schist. Called also granatite, and grenatite..

Phenacite :: Phenacite (n.) A glassy colorless mineral occurring in rhombohedral crystals, sometimes used as a gem. It is a silicate of glucina, and receives its name from its deceptive similarity to quartz..

Euclase :: Euclase (n.) A brittle gem occurring in light green, transparent crystals, affording a brilliant clinodiagonal cleavage. It is a silicate of alumina and glucina..

Phillipsite :: Phillipsite (n.) A hydrous silicate of aluminia, lime, and soda, a zeolitic mineral commonly occurring in complex twin crystals, often cruciform in shape; -- called also christianite..

Topaz :: Topaz (n.) A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumina, and is used as a gem..

Allanite :: Allanite (n.) A silicate containing a large amount of cerium. It is usually black in color, opaque, and is related to epidote in form and composition..

Prehnite :: Prehnite (n.) A pale green mineral occurring in crystalline aggregates having a botryoidal or mammillary structure, and rarely in distinct crystals. It is a hydrous silicate of alumina and lime..

Serpentinize :: Serpentinize (v. t.) To convert (a magnesian silicate) into serpentine.

Bole :: Bole (n.) Any one of several varieties of friable earthy clay, usually colored more or less strongly red by oxide of iron, and used to color and adulterate various substances. It was formerly used in medicine. It is composed essentially of hydrous silicates of alumina, or more rarely of magnesia. See Clay, and Terra alba..

Silicofluoride :: Silicofluoride (n.) A fluosilicate; a salt of silicofluoric acid.

Chlorite :: Chlorite (n.) The name of a group of minerals, usually of a green color and micaceous to granular in structure. They are hydrous silicates of alumina, iron, and magnesia..

Sodalite :: Sodalite (n.) A mineral of a white to blue or gray color, occuring commonly in dodecahedrons, also massive. It is a silicate of alumina and soda with some chlorine..

Cerolite :: Cerolite (n.) A hydrous silicate of magnesium, allied to serpentine, occurring in waxlike masses of a yellow or greenish color..

Thorite :: Thorite (n.) A mineral of a brown to black color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium..

Thuringite :: Thuringite (n.) A mineral occurring as an aggregation of minute scales having an olive-green color and pearly luster. It is a hydrous silicate of aluminia and iron.

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