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zinc oxide
zinc oxide chemical compound, ZnO, that is nearly insoluble in water but soluble in acids or alkalies. It occurs as white hexagonal crystals or a white powder commonly known as zinc white. Zinc white is used as a pigment in paints; less opaque than lithopone, it remains white when exposed to... Read more |
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zinc sulfate
zinc sulfate chemical compound ZnSO 4 , a very water soluble, transparent, colorless, crystalline compound. It is commonly used as the heptahydrate, ZnSO 4 ·7H 2 O, and is commonly called white vitriol; it occurs naturally as the mineral goslarite, and can be prepared by reacting zinc with... Read more |
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Zn
Zn symbol for the element zinc .... Read more |
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zinc
zinc metallic chemical element; symbol Zn; at. no. 30; at. wt. 65.38; m.p. 419.58°C; b.p. 907°C; sp. gr. 7.133 at 25°C; valence +2. Zinc is a lustrous bluish-white metal. It is found in Group 12 of the periodic table . It is brittle and crystalline at ordinary temperatures, but when... Read more |
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sphalerite
sphalerite , mineral composed of zinc sulfide, usually containing some iron and a little cadmium. It occurs in crystals of the isometric system but more generally in cleavable, compact masses. It is transparent to translucent and varies greatly in color, iron-free specimens being pale yellow and... Read more |
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Bathurst
Bathurst , city (1991 pop. 14,409), N N.B., Canada, on Chaleur Bay at the mouth of the Nepisiguit River. A popular beach resort, it also has 40% of Canada's reserves of lead, zinc, and silver. Its other industries include lumbering and shipbuilding.... Read more |
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barite
barite , barytes [New Lat., from barium], or heavy spar, a white, yellow, blue, red, or colorless mineral. It is a sulfate of barium, BaSO 4 , found in nature as tabular crystals or in granular or massive form and has a high specific gravity. The mineral is widely distributed throughout the... Read more |
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Hydrothermal vents
Hydrothermal vents Hydrothermal vents are hot springs located on the ocean floor. The vents spew out water heated by magma, molten rock from below the earth's crust. Water temperatures of higher than 660°F. have been recorded at some vents. Water flowing from vents contains minerals such... Read more |
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Hengyang
Hengyang , city (1994 est. pop. 543,100), central Hunan prov., China, on the Xiang River, at the mouth of the Lei River. It is the leading transportation center of Hunan, linking water, rail, and highway routes. Manufactures include chemicals, agricultural and mining equipment, textiles, paper, and... Read more |
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Oskemen
Öskemen , formerly Ust-Kamenogorsk , city (1989 pop. 324,478), NE Kazakhstan, on the Irtysh River and in the foothills of the W Altai Mts. It is a river port and an industrial center with zinc, lead, and titanium-magnesium smelters. There is a large hydroelectric station nearby. The city was... Read more |
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