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Greenockite :: Greenockite (n.) Native cadmium sulphide, a mineral occurring in yellow hexagonal crystals, also as an earthy incrustation..

Tantalite :: Tantalite (n.) A heavy mineral of an iron-black color and submetallic luster. It is essentially a tantalate of iron.

Drug :: Drug (n.) Any animal, vegetable, or mineral substance used in the composition of medicines; any stuff used in dyeing or in chemical operations..

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

Serpentine :: Serpentine (n.) A mineral or rock consisting chiefly of the hydrous silicate of magnesia. It is usually of an obscure green color, often with a spotted or mottled appearance resembling a serpent's skin. Precious, or noble, serpentine is translucent and of a rich oil-green color..

Melilite :: Melilite (n.) A mineral occurring in small yellow crystals, found in the lavas (melilite basalt) of Vesuvius, and elsewhere..

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..

Anorthite :: Anorthite (n.) A mineral of the feldspar family, commonly occurring in small glassy crystals, also a constituent of some igneous rocks. It is a lime feldspar. See Feldspar..

Tungsten :: Tungsten (n.) A rare element of the chromium group found in certain minerals, as wolfram and scheelite, and isolated as a heavy steel-gray metal which is very hard and infusible. It has both acid and basic properties. When alloyed in small quantities with steel, it greatly increases its hardness. Symbol W (Wolframium). Atomic weight, 183.6. Specific gravity, 18..

Cabrerite :: Cabrerite (n.) An apple-green mineral, a hydrous arseniate of nickel, cobalt, and magnesia; -- so named from the Sierra Cabrera, Spain..

Coloradoite :: Coloradoite (n.) Mercury telluride, an iron-black metallic mineral, found in Colorado..

Magma :: Magma (n.) Any crude mixture of mineral or organic matters in the state of a thin paste.

Microcline :: Microcline (n.) A mineral of the feldspar group, like orthoclase or common feldspar in composition, but triclinic in form..

Physical :: Physical (a.) Perceptible through a bodily or material organization; cognizable by the senses; external; as, the physical, opposed to chemical, characters of a mineral..

Calx :: Calx (n.) The substance which remains when a metal or mineral has been subjected to calcination or combustion by heat, and which is, or may be, reduced to a fine powder..

Crystallite :: Crystallite (n.) A minute mineral form like those common in glassy volcanic rocks and some slags, not having a definite crystalline outline and not referable to any mineral species, but marking the first step in the crystallization process. According to their form crystallites are called trichites, belonites, globulites, etc..

Split :: Splintery (a.) Consisting of splinters; resembling splinters; as, the splintery fracture of a mineral..

Vermilion :: Vermilion (n.) A bright red pigment consisting of mercuric sulphide, obtained either from the mineral cinnabar or artificially. It has a fine red color, and is much used in coloring sealing wax, in printing, etc..

Pyrrhotite :: Pyrrhotite (n.) A bronze-colored mineral, of metallic luster. It is a sulphide of iron, and is remarkable for being attracted by the magnet. Called also magnetic pyrites..

Stone :: Stone (n.) Concreted earthy or mineral matter; also, any particular mass of such matter; as, a house built of stone; the boy threw a stone; pebbles are rounded stones..

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