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Protogine :: Protogine (n.) A kind of granite or gneiss containing a silvery talcose mineral.

Variscite :: Variscite (n.) An apple-green mineral occurring in reniform masses. It is a hydrous phosphate of alumina.

Glairin :: Glairin (n.) A glairy viscous substance, which forms on the surface of certain mineral waters, or covers the sides of their inclosures; -- called also baregin..

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

Cancrinite :: Cancrinite (n.) A mineral occurring in hexagonal crystals, also massive, generally of a yellow color, containing silica, alumina, lime, soda, and carbon dioxide..

Chondrule :: Chondrule (n.) A peculiar rounded granule of some mineral, usually enstatite or chrysolite, found imbedded more or less abundantly in the mass of many meteoric stones, which are hence called chondrites..

Cerargyrite :: Cerargyrite (n.) Native silver chloride, a mineral of a white to pale yellow or gray color, darkening on exposure to the light. It may be cut by a knife, like lead or horn (hence called horn silver)..

Halloysite :: Halloysite (n.) A claylike mineral, occurring in soft, smooth, amorphous masses, of a whitish color..

Ozocerite :: Ozocerite (n.) A waxlike mineral resin; -- sometimes called native paraffin, and mineral wax..

Borax :: Borax (n.) A white or gray crystalline salt, with a slight alkaline taste, used as a flux, in soldering metals, making enamels, fixing colors on porcelain, and as a soap. It occurs native in certain mineral springs, and is made from the boric acid of hot springs in Tuscany. It was originally obtained from a lake in Thibet, and was sent to Europe under the name of tincal. Borax is a pyroborate or tetraborate of sodium, Na2B4O7.10H2O..

Hushing :: Hushing (n.) The process of washing ore, or of uncovering mineral veins, by a heavy discharge of water from a reservoir; flushing; -- also called booming..

Goaf :: Goaf (n.) That part of a mine from which the mineral has been partially or wholly removed; the waste left in old workings; -- called also gob .

Chatoyment :: Chatoyment (n.) Changeableness of color, as in a mineral; play of colors..

Unctuous :: Unctuous (a.) Having a smooth, greasy feel, as certain minerals..

Pitchblende :: Pitchblende (n.) A pitch-black mineral consisting chiefly of the oxide of uranium; uraninite. See Uraninite.

Artificial :: Artificial (a.) Made or contrived by art; produced or modified by human skill and labor, in opposition to natural; as, artificial heat or light, gems, salts, minerals, fountains, flowers..

Tourmaline :: Tourmaline (n.) A mineral occurring usually in three-sided or six-sided prisms terminated by rhombohedral or scalenohedral planes. Black tourmaline (schorl) is the most common variety, but there are also other varieties, as the blue (indicolite), red (rubellite), also green, brown, and white. The red and green varieties when transparent are valued as jewels..

Roscoelite :: Roscoelite (n.) A green micaceous mineral occurring in minute scales. It is essentially a silicate of aluminia and potash containing vanadium.

Olivenite :: Olivenite (n.) An olive-green mineral, a hydrous arseniate of copper; olive ore..

Coquimbite :: Coquimbite (n.) A mineral consisting principally of sulphate of iron; white copperas; -- so called because found in the province of Coquimbo, Chili..

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