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magnesite

magnesite (măg´nəsīt), 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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"magnesite." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 30 May. 2017 <http://www.encyclopedia.com>.

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"magnesite." The Columbia Encyclopedia, 6th ed.. . Retrieved May 30, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/magnesite

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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"magnesite." A Dictionary of Earth Sciences. . Encyclopedia.com. 30 May. 2017 <http://www.encyclopedia.com>.

"magnesite." A Dictionary of Earth Sciences. . Encyclopedia.com. (May 30, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/magnesite

"magnesite." A Dictionary of Earth Sciences. . Retrieved May 30, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/magnesite

magnesite

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"magnesite." Oxford Dictionary of Rhymes. . Encyclopedia.com. 30 May. 2017 <http://www.encyclopedia.com>.

"magnesite." Oxford Dictionary of Rhymes. . Encyclopedia.com. (May 30, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/magnesite

"magnesite." Oxford Dictionary of Rhymes. . Retrieved May 30, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/magnesite