magnesite

magnesite

magnesite , mineral, magnesium carbonate, MgCO 3 , 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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"magnesite." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

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magnesite

magnesite Carbonate, MgCO3 and end-member of a solid solution series with siderite, FeCo3; sp. gr. 3.0; hardness 4; whitish; earthy lustre; compact or granular; occurs as an alteration product of serpentines, dolomites, or limestones and may form as a chemical precipitate. It is mined commercially and used in the production of magnesium compounds, refractory products, and special cements.

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AILSA ALLABY and MICHAEL ALLABY. "magnesite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "magnesite." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-magnesite.html

AILSA ALLABY and MICHAEL ALLABY. "magnesite." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-magnesite.html

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magnesite

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"magnesite." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"magnesite." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O233-magnesite.html

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Free newspaper and magazine articles

Effect of calcined magnesite on soil and Pinus radiata foliage magnesium in...
Magazine article from: Australian Journal of Soil Research; 5/1/1999
Further Actions to Crack down Magnesium Oxide Smuggling
Magazine article from: China Chemical Reporter; 7/16/1996
Magnesium fertiliser dissolution rates in pumice soils under Pinus radiata.
Magazine article from: Australian Journal of Soil Research; 5/1/2000

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