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Pyrophyllite :: Pyrophyllite (n.) A mineral, usually of a white or greenish color and pearly luster, consisting chiefly of the hydrous silicate of alumina..

Alum Shale :: Alum shale () A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock..

Traduce :: Traduce (v. t.) To expose to contempt or shame; to represent as blamable; to calumniate; to vilify; to defame.

Tantalic :: Tantalic (a.) Of or pertaining to tantalum; derived from, or containing, tantalum; specifically, designating any one of a series of acids analogous to nitric acid and the polyacid compounds of phosphorus..

Aspersed :: Aspersed (a.) Bespattered; slandered; calumniated.

Traducible :: Traducible (a.) Capable of being traduced or calumniated.

Colombin :: Colombin (n.) See Calumbin.

Lazulite :: Lazulite (n.) A mineral of a light indigo-blue color, occurring in small masses, or in monoclinic crystals; blue spar. It is a hydrous phosphate of alumina and magnesia..

Zoisite :: Zoisite (n.) A grayish or whitish mineral occurring in orthorhombic, prismatic crystals, also in columnar masses. It is a silicate of alumina and lime, and is allied to epidote..

Petalum :: Petalum (n.) A petal.

Thomsonite :: Thomsonite (n.) A zeolitic mineral, occurring generally in masses of a radiated structure. It is a hydrous silicate of aluminia, lime, and soda. Called also mesole, and comptonite..

Aluminiferous :: Aluminiferous (a.) Containing alum.

Beauxite :: Beauxite (n.) A ferruginous hydrate of alumina. It is largely used in the preparation of aluminium and alumina, and for the lining of furnaces which are exposed to intense heat..

Smectite :: Smectite (n.) A hydrous silicate of alumina, of a greenish color, which, in certain states of humidity, appears transparent and almost gelatinous..

Calumniation :: Calumniation (n.) False accusation of crime or offense, or a malicious and false representation of the words or actions of another, with a view to injure his good name..

Diaspore :: Diaspore (n.) A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe..

Columbo :: Columbo (n.) See Calumba.

Sandalwood :: Sandalwood (n.) The highly perfumed yellowish heartwood of an East Indian and Polynesian tree (Santalum album), and of several other trees of the same genus, as the Hawaiian Santalum Freycinetianum and S. pyrularium, the Australian S. latifolium, etc. The name is extended to several other kinds of fragrant wood..

Lake :: Lake (n.) A pigment formed by combining some coloring matter, usually by precipitation, with a metallic oxide or earth, esp. with aluminium hydrate; as, madder lake; Florentine lake; yellow lake, etc..

Tantalum :: Tantalum (n.) A rare nonmetallic element found in certain minerals, as tantalite, samarskite, and fergusonite, and isolated as a dark powder which becomes steel-gray by burnishing. Symbol Ta. Atomic weight 182.0. Formerly called also tantalium..

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