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A white, yellowish, or brown mineral, magnesium carbonate, MgCO3, used in the manufacture of magnesium oxide and carbon dioxide.


(Minerals) a white, colourless, or lightly tinted mineral consisting of naturally occurring magnesium carbonate in hexagonal crystalline form: a source of magnesium and also used in the manufacture of refractory bricks. Formula: MgCO3
[C19: from magnesium + -ite1]


(ˈmæg nəˌsaɪt)

a mineral, magnesium carbonate, MgCO3, usu. occurring in white masses: a source of magnesium oxide.
[< French magnésite (1797); see magnesia, -ite1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.magnesite - a white mineral consisting of magnesium carbonatemagnesite - a white mineral consisting of magnesium carbonate; a source of magnesium
atomic number 12, magnesium, Mg - a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
Bodenbelagsarbeiten the houses 5 and 6 each have different old substrates such as magnesite flooring, anhydrite / Leunitestrich, plank flooring, including the necessary underground treatments.
5 million tonnes of kaolin and more than 15 million tonnes of magnesite.
Our main priority now is to maintain a high level of safety and security and to maximise the value of our current gold mining operations at Mahad Al Dahab and Bulgah, and our magnesite processing operations at Madina Industrial City.
A third party has sought the Warden's approval to peg and apply for registration of new mineral claims over the Mt Hutton portion of Archer's greater Leigh Creek magnesite deposits for the purpose of extracting dolomite.
In general the Magnesite formation procedure can be explained through three methods:
Magnesita owns some of the largest and highest quality magnesite deposits in the world with total estimated reserves of about 200 years.
10 In 1938 Steetley Magnesite opened on the coast at Hartlepool to produce magnesium.
Maaden is looking to exploit magnesite deposits at Zarghat, 700 kilometres north- east of Jeddah.
The spectacular growth of Iran's steel industry is likely to provide a beacon for refractory mineral suppliers to the country, and in particular dead burned magnesia imports owing to the country's limited domestic sources of magnesite.
Besides, heavy deposits of Magnesite, a mineral used in steel and medicines industries have also been found in Killa Saifullah district.
The chimney had been a part of the Hartlepool skyline since the early 1960s, when it was part of the town's magnesite works which produced chemicals needed for making metal.