MAGNESITE

măgˈnəsīt, mineral, magnesium carbonate, MgCO3, white, yellow, or gray in color. It originates through the alteration of olivine or of serpentine by waters carrying carbon dioxide; through the replacement of calcium by magnesium in calcareous rocks, sometimes limestone but more often dolomite; and through precipitation from waters rich in magnesium that have undergone reaction with sodium carbonate. Caustic magnesite is not thoroughly calcined, 3% to 4% of carbon dioxide being left; mixed with magnesium chloride it makes oxychloride cement, which is extensively used for floorings and as a stucco. Dead-burned magnesite is calcined in kilns until it contains less than 1% of carbon dioxide; it is made into an excellent firebrick. Magnesite is also used in the manufacture of Epsom salts, face powder, boiler wrappings, and disinfectants.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Magnesite
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books on: Magnesite  - 264 results

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...XVII. Other Minerals:--Titanium -- Magnesite -- Steatite -- Vanadium --Silica--Arsenic--Corundum--Felspar...minerals like titanium, thorium, beryl, gypsum, bauxite, magnesite, silica, granite, abrasives, refractory minerals and corundum...
...through Jurassic layers of sandstones and shales contain chromite in south- western Serbia and northern Macedonia, and magnesite and asbestos in western Serbia. During the Upper Cretaceous period, the sea in eastern Serbia began to recede, and deposits...
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journal articles on: Magnesite  - 13 results

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...Bay thermal power station as part of a deal to secure the magnesite development (Mercury, 3 November 1998). The Budget On...securing the largest industrial proposal -- the Crest Resources Magnesite development -- in Tasmania since the failed Wesley Vale pulp...
...D.P.R.K. Government interest; -- Authorizing imports of magnesite, a refractory material used in the U.S. steel industry--North...ONLINE, supra note 47. Exports include minerals (e.g., lead, magnesite, and zinc), metallurgical products (iron and steel), and cement...
...This was crucial to the viability of the Crest/Multiplex magnesite/ magnesium project and vital for providing alternative energy...2002. The government continued to negotiate with another magnesite proponent, Golden Triangle, over the possible siting of its...
...magnesium hydroxicarbonate show a characteristic style (pp. 165-84). This recently recognized artificial material based on magnesite can be formed and worked manually. The formula given here on p. 166 must be incorrect; the correct stoichiometry is most probably...
...indications that a major mining development in the states north-west might proceed. The project involved the establishment of a magnesite mine and a metal refining industry, representing a $700 million investment and a potential 450 jobs in one of the states highest...
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magazine articles on: Magnesite  - 3 results

 
 
...chassis rampant!"--a Model T chassis placed in a pool using magnesite, a then-new material. He continued to incorporate water and...innovative application of light to ceilings in which sheets of magnesite, which had become one of his preferred materials, concealed...
...January 1997, all that the United States had done to implement Article II was to lift sanctions on the export of one commodity (magnesite) and to grant permission to AT T to open up telephone and fax communications. The few U.S. companies that have shown an interest...
...Nepal, forests and pastureland have been cooperatively managed by local ecosystem communities for centuries. Soapstone and magnesite (magnesium carbonate) quarries have since taken over these commons. By depriving the local people of large tracts of their...


 

newspaper articles on: Magnesite  - 17 results

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...LESS than five months after announcing major production cuts, Queensland Magnesia (QMAG) has started planning to open a new magnesite mining operation 10km north of Yaamba. The move is driven by the need to develop new products to replace demand that has been...
...positive sign for the local economy (story Page 3). It follows news that Queensland Magnesia has started planning to open a new magnesite mining operation 10km north of Yaamba. I also have good mail that a Rockhampton hotel is looking at an $8 million to $10 million...
...LESS than five months after announcing major production cuts, Queensland Magnesia (QMAG) has started planning to open a new magnesite mining operation 10km north of Yaamba. The move is driven by the need to develop new products to replace demand that has been...
...little has changed in the 40-year U.S. economic sanctions hobbling the North, apart from allowing some sales of the mineral magnesite to American buyers. Because of that, North Korea has complained it was shortchanged by the 1994 Agreed Framework Accord signed...
...200,000 carats. Large deposits of coal and iron are found in the southern region. Deposits of gold, lead, tin, tungsten, and magnesite abound in other parts of the country. Tanzania has been playing an important role in several regional and international...
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encyclopedia articles on: Magnesite  - 17 results

       More encyclopedia Results: 1-10 11-17 >>  
 
MAGNESITE mag n sit, mineral, magnesium carbonate, MgCO 3...have undergone reaction with sodium carbonate. Caustic magnesite is not thoroughly calcined, 3% to 4% of carbon dioxide...extensively used for floorings and as a stucco. Dead-burned magnesite is calcined in kilns until it contains less than 1% of...
...km) long and 15 mi (20 km) wide, in the Great Rift Valley, E Africa, on the Kenya-Tanzania border. It has soda, salt, and magnesite deposits. ____________________ Copyright 2009 Columbia University Press. Used with the permission of Columbia University...
...in the east. The region is largely mountainous, dry, and agricultural. Olive oil, wine, wheat, and tobacco are produced; magnesite is mined. In antiquity the peninsula was famous for its timber. Olynthus and Potidaea were the chief towns in antiquity...
...Mur, Enns, and Raab rivers. It is the chief Austrian mining district (iron ore, lignite, salt, graphite, gypsum, talc, and magnesite) and has a well-developed metals industry, particularly in the north, near the Erzberg. The province also produces paper...
...in Austria (12,460 ft/3,797 m), rises in the northeast, at the Tyrol province border. Carinthia has mines (lead, zinc, and magnesite) and well-developed farms (especially in the fertile Drava, or Drau, plain). Manufactures of the province include electrotechnical...
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